IfcOpenShell/src/ifcopenshell-python/ifcopenshell/util/schema/ifc4_properties.json

{
    "Pset_ActionRequest": {
        "properties": {
            "RequestComments": {
                "description": "Comments that may be made on the request."
            },
            "RequestSourceLabel": {
                "description": "A specific name or label that further qualifies the identity of a request source. In the event of an email, this may be the email address."
            },
            "RequestSourceName": {
                "description": "The person making the request, where known."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedmgmtelements/pset/pset_actionrequest.htm"
    },
    "Pset_ActorCommon": {
        "properties": {
            "Category": {
                "description": "Designation of the category into which the actors in the population belong."
            },
            "NumberOfActors": {
                "description": "The number of actors that are to be dealt with together in the population."
            },
            "SkillLevel": {
                "description": "Skill level exhibited by the actor and which indicates an extent of their capability to perform actions on the artefacts upon which they can act."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifckernel/pset/pset_actorcommon.htm"
    },
    "Pset_ActuatorPHistory": {
        "properties": {
            "Position": {
                "description": "Indicates position of the actuator over time where 0.0 is fully closed and 1.0 is fully open."
            },
            "Quality": {
                "description": "Indicates the quality of measurement or failure condition, which may be further qualified by the Status.  True: measured values are considered reliable; False: measured values are considered not reliable (i.e. a fault has been detected); Unknown: reliability of values is uncertain."
            },
            "Status": {
                "description": "Indicates an error code or identifier, whose meaning is specific to the particular automation system.  Example values include: 'ConfigurationError', 'NotConnected', 'DeviceFailure', 'SensorFailure', 'LastKnown, 'CommunicationsFailure', 'OutOfService'."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_actuatorphistory.htm"
    },
    "Pset_ActuatorTypeCommon": {
        "properties": {
            "Application": {
                "description": "Indicates application of actuator."
            },
            "FailPosition": {
                "description": "Specifies the required fail-safe position of the actuator."
            },
            "ManualOverride": {
                "description": "Identifies whether hand-operated operation is provided as an override (= TRUE) or not (= FALSE). Note that this value should be set to FALSE by default in the case of a Hand Operated Actuator."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_actuatortypecommon.htm"
    },
    "Pset_ActuatorTypeElectricActuator": {
        "properties": {
            "ActuatorInputPower": {
                "description": "Maximum input power requirement."
            },
            "ElectricActuatorType": {
                "description": "Enumeration that identifies electric actuator as defined by its operational principle."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_actuatortypeelectricactuator.htm"
    },
    "Pset_ActuatorTypeHydraulicActuator": {
        "properties": {
            "InputFlowrate": {
                "description": "Maximum hydraulic flowrate requirement."
            },
            "InputPressure": {
                "description": "Maximum design pressure for the actuator."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_actuatortypehydraulicactuator.htm"
    },
    "Pset_ActuatorTypeLinearActuation": {
        "properties": {
            "Force": {
                "description": "Indicates the maximum close-off force for the actuator."
            },
            "Stroke": {
                "description": "Indicates the maximum distance the actuator must traverse."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_actuatortypelinearactuation.htm"
    },
    "Pset_ActuatorTypePneumaticActuator": {
        "properties": {
            "InputFlowrate": {
                "description": "Maximum input control air flowrate requirement."
            },
            "InputPressure": {
                "description": "Maximum input control air pressure requirement."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_actuatortypepneumaticactuator.htm"
    },
    "Pset_ActuatorTypeRotationalActuation": {
        "properties": {
            "RangeAngle": {
                "description": "Indicates the maximum rotation the actuator must traverse."
            },
            "Torque": {
                "description": "Indicates the maximum close-off torque for the actuator."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_actuatortyperotationalactuation.htm"
    },
    "Pset_AirSideSystemInformation": {
        "properties": {
            "AirSideSystemDistributionType": {
                "description": "This enumeration defines the basic types of air side systems (e.g., SingleDuct, DualDuct, Multizone, etc.)."
            },
            "AirSideSystemType": {
                "description": "This enumeration specifies the basic types of possible air side systems (e.g., Constant Volume, Variable Volume, etc.)."
            },
            "AirflowSensible": {
                "description": "The air flowrate required to satisfy the sensible peak loads."
            },
            "ApplianceDiversity": {
                "description": "Diversity of appliance load."
            },
            "CoolingTemperatureDelta": {
                "description": "Cooling temperature difference for calculating space air flow rates."
            },
            "Description": {
                "description": "The description of the air side system."
            },
            "EnergyGainSensible": {
                "description": "The sum of total energy gains for the spaces served by the system during the peak cooling conditions, plus any system-level sensible energy gains."
            },
            "EnergyGainTotal": {
                "description": "The total amount of energy gains for the spaces served by the system during the peak cooling conditions, plus any system-level total energy gains."
            },
            "EnergyLoss": {
                "description": "The sum of energy losses for the spaces served by the system during the peak heating conditions."
            },
            "FanPower": {
                "description": "Fan motor loads contributing to the cooling load."
            },
            "HeatingTemperatureDelta": {
                "description": "Heating temperature difference for calculating space air flow rates."
            },
            "InfiltrationDiversitySummer": {
                "description": "Diversity factor for Summer infiltration."
            },
            "InfiltrationDiversityWinter": {
                "description": "Diversity factor for Winter infiltration."
            },
            "LightingDiversity": {
                "description": "Lighting diversity."
            },
            "LoadSafetyFactor": {
                "description": "Load safety factor."
            },
            "Name": {
                "description": "The name of the air side system."
            },
            "TotalAirflow": {
                "description": "The total design supply air flowrate required for the system for either heating or cooling conditions, whichever is greater."
            },
            "Ventilation": {
                "description": "Required outside air ventilation."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_airsidesysteminformation.htm"
    },
    "Pset_AirTerminalBoxPHistory": {
        "properties": {
            "AirflowCurve": {
                "description": "Air flowrate versus damper position relationship;airflow = f ( valve position)."
            },
            "AtmosphericPressure": {
                "description": "Ambient atmospheric pressure."
            },
            "DamperPosition": {
                "description": "Control damper position, ranging from 0 to 1."
            },
            "Sound": {
                "description": "Sound performance."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_airterminalboxphistory.htm"
    },
    "Pset_AirTerminalBoxTypeCommon": {
        "properties": {
            "AirPressureRange": {
                "description": "Allowable air static pressure range at the entrance of the air terminal box."
            },
            "AirflowRateRange": {
                "description": "Range of airflow that can be delivered."
            },
            "ArrangementType": {
                "description": "Terminal box arrangement. SingleDuct: Terminal box receives warm or cold air from a single air supply duct. DualDuct: Terminal box receives warm and cold air from separate air supply ducts."
            },
            "HasFan": {
                "description": "Terminal box has a fan inside (fan powered box)."
            },
            "HasReturnAir": {
                "description": "Terminal box has return air mixed with supply air from duct work."
            },
            "HasSoundAttenuator": {
                "description": "Terminal box has a sound attenuator."
            },
            "HousingThickness": {
                "description": "Air terminal box housing material thickness."
            },
            "NominalAirFlowRate": {
                "description": "Nominal airflow rate."
            },
            "NominalDamperDiameter": {
                "description": "Nominal damper diameter."
            },
            "NominalInletAirPressure": {
                "description": "Nominal airflow inlet static pressure."
            },
            "OperationTemperatureRange": {
                "description": "Allowable operational range of the ambient air temperature."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "ReheatType": {
                "description": "Terminal box reheat type."
            },
            "ReturnAirFractionRange": {
                "description": "Allowable return air fraction range as a fraction of discharge airflow."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_airterminalboxtypecommon.htm"
    },
    "Pset_AirTerminalOccurrence": {
        "properties": {
            "AirFlowRate": {
                "description": "The actual airflow rate as designed."
            },
            "AirflowType": {
                "description": "Enumeration defining the functional type of air flow through the terminal."
            },
            "Location": {
                "description": "Location  (a single type of diffuser can be used for multiple locations); high means close to ceiling."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_airterminaloccurrence.htm"
    },
    "Pset_AirTerminalPHistory": {
        "properties": {
            "AirFlowRate": {
                "description": "Volumetric flow rate."
            },
            "CenterlineAirVelocity": {
                "description": "Centerline air velocity versus distance from the diffuser and temperature differential; a function of distance from diffuser and temperature difference between supply air and room air."
            },
            "InductionRatio": {
                "description": "Induction ratio versus distance from the diffuser and its discharge direction; induction ratio (or entrainment ratio) is the ratio of the volumetric flow rate in the jet to the volumetric flow rate at the air terminal."
            },
            "NeckAirVelocity": {
                "description": "Air velocity at the neck."
            },
            "PressureDrop": {
                "description": "Drop in total pressure between inlet and outlet at nominal air-flow rate."
            },
            "SupplyAirTemperatureCooling": {
                "description": "Supply air temperature in cooling mode."
            },
            "SupplyAirTemperatureHeating": {
                "description": "Supply air temperature in heating mode."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_airterminalphistory.htm"
    },
    "Pset_AirTerminalTypeCommon": {
        "properties": {
            "AirDiffusionPerformanceIndex": {
                "description": "The Air Diffusion Performance Index (ADPI) is used for cooling mode conditions. If several measurements of air velocity and air temperature are made throughout the occupied zone of a space, the ADPI is the percentage of locations where measurements were taken that meet the specifications for effective draft temperature and air velocity."
            },
            "AirFlowrateRange": {
                "description": "Air flowrate range within which the air terminal is designed to operate."
            },
            "AirFlowrateVersusFlowControlElement": {
                "description": "Air flowrate versus flow control element position at nominal pressure drop."
            },
            "CoreSetHorizontal": {
                "description": "Degree of horizontal (in the X-axis of the LocalPlacement) blade set from the centerline."
            },
            "CoreSetVertical": {
                "description": "Degree of vertical (in the Y-axis of the LocalPlacement) blade set from the centerline."
            },
            "CoreType": {
                "description": "Identifies the way the core of the AirTerminal is constructed."
            },
            "DischargeDirection": {
                "description": "Discharge direction of the air terminal."
            },
            "EffectiveArea": {
                "description": "Effective discharge area of the air terminal."
            },
            "FaceType": {
                "description": "Identifies how the terminal face of an AirTerminal is constructed."
            },
            "FinishColor": {
                "description": "The finish color for the air terminal."
            },
            "FinishType": {
                "description": "The type of finish for the air terminal."
            },
            "FlowControlType": {
                "description": "Type of flow control element that may be included as a part of the construction of the air terminal."
            },
            "FlowPattern": {
                "description": "Flow pattern."
            },
            "HasIntegralControl": {
                "description": "If TRUE, a self powered temperature control is included in the AirTerminal."
            },
            "HasSoundAttenuator": {
                "description": "If TRUE, the air terminal has sound attenuation."
            },
            "HasThermalInsulation": {
                "description": "If TRUE, the air terminal has thermal insulation."
            },
            "MountingType": {
                "description": "The way the air terminal is mounted to the ceiling, wall, etc."
            },
            "NeckArea": {
                "description": "Neck area of the air terminal."
            },
            "NumberOfSlots": {
                "description": "Number of slots."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Shape": {
                "description": "Shape of the air terminal. Slot is typically a long narrow supply device with an aspect ratio generally greater than 10 to 1."
            },
            "SlotLength": {
                "description": "Slot length."
            },
            "SlotWidth": {
                "description": "Slot width."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "TemperatureRange": {
                "description": "Temperature range within which the air terminal is designed to operate."
            },
            "ThrowLength": {
                "description": "The horizontal or vertical axial distance an airstream travels after leaving an AirTerminal before the maximum stream velocity is reduced to a specified terminal velocity under isothermal conditions at the upper value of the AirFlowrateRange."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_airterminaltypecommon.htm"
    },
    "Pset_AirToAirHeatRecoveryPHistory": {
        "properties": {
            "AirPressureDropCurves": {
                "description": "Air pressure drop as function of air flow rate."
            },
            "DefrostTemperatureEffectiveness": {
                "description": "Temperature heat transfer effectiveness when defrosting is active."
            },
            "HumidityEffectiveness": {
                "description": "Humidity heat transfer effectiveness: The ratio of primary airflow absolute humidity changes to maximum possible absolute humidity changes."
            },
            "LatentHeatTransferRate": {
                "description": "Latent heat transfer rate."
            },
            "SensibleEffectiveness": {
                "description": "Sensible heat transfer effectiveness, where effectiveness is defined as the ratio of heat transfer to maximum possible heat transfer."
            },
            "SensibleEffectivenessTable": {
                "description": "Sensible heat transfer effectiveness curve as a function of the primary and secondary air flow rate."
            },
            "SensibleHeatTransferRate": {
                "description": "Sensible heat transfer rate."
            },
            "TemperatureEffectiveness": {
                "description": "Temperature heat transfer effectiveness: The ratio of primary airflow temperature changes to maximum possible temperature changes."
            },
            "TotalEffectiveness": {
                "description": "Total heat transfer effectiveness: The ratio of heat transfer to the maximum possible heat transfer."
            },
            "TotalEffectivenessTable": {
                "description": "Total heat transfer effectiveness curve as a function of the primary and secondary air flow rate."
            },
            "TotalHeatTransferRate": {
                "description": "Total heat transfer rate."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_airtoairheatrecoveryphistory.htm"
    },
    "Pset_AirToAirHeatRecoveryTypeCommon": {
        "properties": {
            "HasDefrost": {
                "description": "has the heat exchanger has defrost function or not."
            },
            "HeatTransferType": {
                "description": "Type of heat transfer between the two air streams."
            },
            "OperationalTemperatureRange": {
                "description": "Allowable operation ambient air temperature range."
            },
            "PrimaryAirflowRateRange": {
                "description": "possible range of primary airflow that can be delivered.."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "SecondaryAirflowRateRange": {
                "description": "possible range of secondary airflow that can be delivered."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_airtoairheatrecoverytypecommon.htm"
    },
    "Pset_AlarmPHistory": {
        "properties": {
            "Acknowledge": {
                "description": "Indicates acknowledgement status where False indicates acknowlegement is required and outstanding, True indicates condition has been acknowedged, and Unknown indicates no acknowledgement is required.  Upon resetting the condition, then acknowledgement reverts to Unknown."
            },
            "Condition": {
                "description": "Indicates alarm condition over time.  The range of possible values and their meanings is defined by Pset_AlarmTypeCommon.Condition.  An empty value indicates no present alarm condition."
            },
            "Enabled": {
                "description": "Indicates whether alarm is enabled or disabled over time."
            },
            "Severity": {
                "description": "Indicates alarm severity over time, where the scale of values is determined by the control system configuration.  A zero value indicates no present alarm."
            },
            "User": {
                "description": "Indicates acknowledging user over time by identification corresponding to IfcPerson.Identification on an IfcActor."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_alarmphistory.htm"
    },
    "Pset_AlarmTypeCommon": {
        "properties": {
            "Condition": {
                "description": "Table mapping alarm condition identifiers to descriptive labels, which may be used for interpreting Pset_AlarmPHistory.Condition."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_alarmtypecommon.htm"
    },
    "Pset_AnnotationContourLine": {
        "properties": {
            "ContourValue": {
                "description": "Value of the elevation of the contour above or below a reference plane."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_annotationcontourline.htm"
    },
    "Pset_AnnotationLineOfSight": {
        "properties": {
            "RoadVisibleDistanceLeft": {
                "description": "Distance visible to the left of the access."
            },
            "RoadVisibleDistanceRight": {
                "description": "Distance visible to the right of the access."
            },
            "SetbackDistance": {
                "description": "Setback distance from the point of connection on the major element along the axis of the minor element (e.g. distance from a public road at which the line of sigfht is measured."
            },
            "VisibleAngleLeft": {
                "description": "Angle of visibility to the left of the access."
            },
            "VisibleAngleRight": {
                "description": "Angle of visibility to the right of the access."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_annotationlineofsight.htm"
    },
    "Pset_AnnotationSurveyArea": {
        "properties": {
            "AccuracyQualityExpected": {
                "description": "A measure of the accuracy quality of survey points as expected expressed in percentage terms."
            },
            "AccuracyQualityObtained": {
                "description": "A measure of the accuracy quality of survey points as obtained expressed in percentage terms."
            },
            "AcquisitionMethod": {
                "description": "The means by which survey data was acquired."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_annotationsurveyarea.htm"
    },
    "Pset_Asset": {
        "properties": {
            "AssetAccountingType": {
                "description": "Identifies the predefined types of risk from which the type required may be set."
            },
            "AssetInsuranceType": {
                "description": "Identifies the predefined types of insurance rating from which the type required may be set."
            },
            "AssetTaxType": {
                "description": "Identifies the predefined types of taxation group from which the type required may be set."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_asset.htm"
    },
    "Pset_AudioVisualAppliancePHistory": {
        "properties": {
            "AudioVolume": {
                "description": "Indicates the audio volume level where the integer level corresponds to an entry or interpolation within Pset_AudioVisualApplianceTypeCommon.AudioVolume."
            },
            "MediaContent": {
                "description": "Indicates the media content storage location, such as URLs to camera footage within particular time periods."
            },
            "MediaSource": {
                "description": "Indicates the media source where the identifier corresponds to an entry within the table of available media sources on Pset_AudioVisualApplianceTypeCommon.MediaSource."
            },
            "PowerState": {
                "description": "Indicates the power state of the device where True is on and False is off."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_audiovisualappliancephistory.htm"
    },
    "Pset_AudioVisualApplianceTypeAmplifier": {
        "properties": {
            "AmplifierType": {
                "description": "Indicates the type of amplifier."
            },
            "AudioAmplification": {
                "description": "Indicates audio amplification frequency ranges."
            },
            "AudioMode": {
                "description": "Indicates audio sound modes and corresponding labels, if applicable."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_audiovisualappliancetypeamplifier.htm"
    },
    "Pset_AudioVisualApplianceTypeCamera": {
        "properties": {
            "CameraType": {
                "description": "Indicates the type of camera."
            },
            "IsOutdoors": {
                "description": "Indicates if camera is designed to be used outdoors."
            },
            "PanHorizontal": {
                "description": "Indicates horizontal range for panning."
            },
            "PanTiltZoomPreset": {
                "description": "Indicates pan/tilt/zoom position presets."
            },
            "PanVertical": {
                "description": "Indicates vertical range for panning."
            },
            "TiltHorizontal": {
                "description": "Indicates horizontal range for pivoting, where positive values indicate the camera rotating clockwise,"
            },
            "TiltVertical": {
                "description": "Indicates vertical range for pivoting, where 0.0 is level, +90 degrees is looking up, -90 degrees is looking down."
            },
            "VideoCaptureInterval": {
                "description": "Indicates video frame capture time intervals."
            },
            "VideoResolutionHeight": {
                "description": "Indicates the number of vertical pixels (the largest native video resolution height)."
            },
            "VideoResolutionMode": {
                "description": "Indicates video resolution modes."
            },
            "VideoResolutionWidth": {
                "description": "Indicates the number of horizontal pixels (the largest native video resolution width)."
            },
            "Zoom": {
                "description": "Indicates the zoom range."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_audiovisualappliancetypecamera.htm"
    },
    "Pset_AudioVisualApplianceTypeCommon": {
        "properties": {
            "AudioVolume": {
                "description": "Indicates discrete audio volume levels and corresponding sound power offsets, if applicable.  Missing values may be interpolated."
            },
            "MediaSource": {
                "description": "Indicates media sources and corresponding names of ports (IfcDistributionPort with FlowDirection=SINK and PredefinedType=AUDIOVISUAL) or aggregated audio/video components (IfcAudioVisualAppliance)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_audiovisualappliancetypecommon.htm"
    },
    "Pset_AudioVisualApplianceTypeDisplay": {
        "properties": {
            "AudioMode": {
                "description": "Indicates audio sound modes and corresponding labels, if applicable."
            },
            "Brightness": {
                "description": "Indicates the display brightness."
            },
            "ContrastRatio": {
                "description": "Indicates the display contrast ratio."
            },
            "DisplayHeight": {
                "description": "Indicates the physical height of the screen (only the display surface)."
            },
            "DisplayType": {
                "description": "Indicates the type of display."
            },
            "DisplayWidth": {
                "description": "Indicates the physical width of the screen (only the display surface)."
            },
            "NominalSize": {
                "description": "Indicates the diagonal screen size."
            },
            "RefreshRate": {
                "description": "Indicates the display refresh frequency."
            },
            "TouchScreen": {
                "description": "Indicates touchscreen support."
            },
            "VideoCaptionMode": {
                "description": "Indicates video closed captioning modes."
            },
            "VideoResolutionHeight": {
                "description": "Indicates the number of vertical pixels, e.g. 1080."
            },
            "VideoResolutionMode": {
                "description": "Indicates video resolution modes."
            },
            "VideoResolutionWidth": {
                "description": "Indicates the number of horizontal pixels, e.g. 1920."
            },
            "VideoScaleMode": {
                "description": "Indicates video scaling modes."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_audiovisualappliancetypedisplay.htm"
    },
    "Pset_AudioVisualApplianceTypePlayer": {
        "properties": {
            "PlayerMediaEject": {
                "description": "Indicates whether the media can be ejected from the player (if physical media)."
            },
            "PlayerMediaFormat": {
                "description": "Indicates supported media formats."
            },
            "PlayerType": {
                "description": "Indicates the type of player."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_audiovisualappliancetypeplayer.htm"
    },
    "Pset_AudioVisualApplianceTypeProjector": {
        "properties": {
            "ProjectorType": {
                "description": "Indicates the type of projector."
            },
            "VideoCaptionMode": {
                "description": "Indicates closed captioning modes."
            },
            "VideoResolutionHeight": {
                "description": "Indicates the number of vertical pixels (the largest native video resolution height)."
            },
            "VideoResolutionMode": {
                "description": "Indicates video resolution modes."
            },
            "VideoResolutionWidth": {
                "description": "Indicates the number of horizontal pixels (the largest native video resolution width)."
            },
            "VideoScaleMode": {
                "description": "Indicates video scaling modes."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_audiovisualappliancetypeprojector.htm"
    },
    "Pset_AudioVisualApplianceTypeReceiver": {
        "properties": {
            "AudioAmplification": {
                "description": "Indicates audio amplification frequency ranges."
            },
            "AudioMode": {
                "description": "Indicates audio sound modes and corresponding labels, if applicable."
            },
            "ReceiverType": {
                "description": "Indicates the type of receiver."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_audiovisualappliancetypereceiver.htm"
    },
    "Pset_AudioVisualApplianceTypeSpeaker": {
        "properties": {
            "FrequencyResponse": {
                "description": "Indicates the output over a specified range of frequencies."
            },
            "Impedence": {
                "description": "Indicates the speaker impedence."
            },
            "SpeakerDriverSize": {
                "description": "Indicates the number of drivers and their sizes."
            },
            "SpeakerMounting": {
                "description": "Indicates how the speaker is designed to be mounted."
            },
            "SpeakerType": {
                "description": "Indicates the type of speaker."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_audiovisualappliancetypespeaker.htm"
    },
    "Pset_AudioVisualApplianceTypeTuner": {
        "properties": {
            "TunerChannel": {
                "description": "Indicates the tuner channels, if applicable."
            },
            "TunerFrequency": {
                "description": "Indicates the tuner frequencies, if applicable."
            },
            "TunerMode": {
                "description": "Indicates the tuner modes (or bands).  For example, 'AnalogCable', 'DigitalAir', 'AM', 'FM'."
            },
            "TunerType": {
                "description": "Indicates the tuner type."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_audiovisualappliancetypetuner.htm"
    },
    "Pset_BeamCommon": {
        "properties": {
            "FireRating": {
                "description": "Fire rating for the element. It is given according to the national fire safety classification."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "LoadBearing": {
                "description": "Indicates whether the object is intended to carry loads (TRUE) or not (FALSE)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Roll": {
                "description": "Rotation against the longitudinal axis - relative to the global Z direction for all beams that are non-vertical in regard to the global coordinate system (Profile direction equals global Z is Roll = 0.)"
            },
            "Slope": {
                "description": "Slope angle - relative to horizontal (0.0 degrees)."
            },
            "Span": {
                "description": "Clear span for this object."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of the element. Here the total thermal transmittance coefficient through the beam within the direction of the thermal flow (including all materials)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_beamcommon.htm"
    },
    "Pset_BoilerPHistory": {
        "properties": {
            "AuxiliaryEnergyConsumption": {
                "description": "Boiler secondary energy source consumption (i.e., the electricity consumed by electrical devices such as fans and pumps)."
            },
            "CombustionEfficiency": {
                "description": "Combustion efficiency under nominal condition."
            },
            "CombustionTemperature": {
                "description": "Average combustion chamber temperature."
            },
            "EnergySourceConsumption": {
                "description": "Energy consumption."
            },
            "Load": {
                "description": "Boiler real load."
            },
            "OperationalEfficiency": {
                "description": "Operational efficiency: boiler output divided by total energy input (electrical and fuel)."
            },
            "PartLoadRatio": {
                "description": "Ratio of the real to the nominal capacity."
            },
            "PrimaryEnergyConsumption": {
                "description": "Boiler primary energy source consumption (i.e., the fuel consumed for changing the thermodynamic state of the fluid)."
            },
            "WorkingPressure": {
                "description": "Boiler working pressure."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_boilerphistory.htm"
    },
    "Pset_BoilerTypeCommon": {
        "properties": {
            "EnergySource": {
                "description": "Enumeration defining the energy source or fuel cumbusted to generate heat."
            },
            "HeatTransferSurfaceArea": {
                "description": "Total heat transfer area of the vessel."
            },
            "IsWaterStorageHeater": {
                "description": "This is used to identify if the boiler has storage capacity (TRUE). If FALSE, then there is no storage capacity built into the boiler, such as an instantaneous hot water heater."
            },
            "NominalEnergyConsumption": {
                "description": "Nominal fuel consumption rate required to produce the total boiler heat output."
            },
            "NominalPartLoadRatio": {
                "description": "Allowable part load ratio range."
            },
            "OperatingMode": {
                "description": "Identifies the operating mode of the boiler."
            },
            "OutletTemperatureRange": {
                "description": "Allowable outlet temperature of either the water or the steam."
            },
            "PartialLoadEfficiencyCurves": {
                "description": "Boiler efficiency as a function of the partial load factor; E = f (partialLaodfactor)."
            },
            "PressureRating": {
                "description": "Nominal pressure rating of the boiler as rated by the agency having jurisdiction."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "WaterInletTemperatureRange": {
                "description": "Allowable water inlet temperature range."
            },
            "WaterStorageCapacity": {
                "description": "Water storage capacity."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_boilertypecommon.htm"
    },
    "Pset_BoilerTypeSteam": {
        "properties": {
            "HeatOutput": {
                "description": "Total nominal heat output as listed by the Boiler manufacturer. For steam boilers, it is a function of inlet temperature versus steam pressure.  Note: as two variables are used, DefiningValues and DefinedValues are null, and values are stored in IfcTable in the following order: InletTemperature(IfcThermodynamicTemperatureMeasure) and OutletTemperature(IfcThermodynamicTemperatureMeasure) in DefiningValues, and HeatOutput(IfcEnergyMeasure) in DefinedValues. For example, DefiningValues(InletTemp, OutletTemp), DefinedValues(null, HeatOutput). The IfcTable is related to IfcPropertyTableValue using IfcMetric and IfcPropertyConstraintRelationship."
            },
            "MaximumOutletPressure": {
                "description": "Maximum steam outlet pressure."
            },
            "NominalEfficiency": {
                "description": "The nominal efficiency of the boiler as defined by the manufacturer. For steam boilers, a function of inlet temperature versus steam pressure.  Note: as two variables are used, DefiningValues and DefinedValues are null, and values are stored in IfcTable in the following order: InletTemperature(IfcThermodynamicTemperatureMeasure) and OutletTemperature(IfcThermodynamicTemperatureMeasure) in DefiningValues, and NominalEfficiency(IfcNormalisedRatioMeasure) in DefinedValues. For example, DefininfValues(InletTemp, OutletTemp), DefinedValues(null, NominalEfficiency).  The IfcTable is related to IfcPropertyTableValue using IfcMetric and IfcPropertyConstraintRelationship."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_boilertypesteam.htm"
    },
    "Pset_BoilerTypeWater": {
        "properties": {
            "HeatOutput": {
                "description": "Total nominal heat output as listed by the Boiler manufacturer. For water boilers, it is a function of inlet versus outlet temperature. For steam boilers, it is a function of inlet temperature versus steam pressure.  Note: as two variables are used, DefiningValues and DefinedValues are null, and values are stored in IfcTable in the following order: InletTemperature(IfcThermodynamicTemperatureMeasure), OutletTemperature(IfcThermodynamicTemperatureMeasure), HeatOutput(IfcEnergyMeasure).  The IfcTable is related to IfcPropertyTableValue using IfcMetric and IfcPropertyConstraintRelationship."
            },
            "NominalEfficiency": {
                "description": "The nominal efficiency of the boiler as defined by the manufacturer. For water boilers, a function of inlet versus outlet temperature. Note: as two variables are used, DefiningValues and DefinedValues are null, and values are stored in IfcTable in the following order: InletTemperature(IfcThermodynamicTemperatureMeasure), OutletTemperature(IfcThermodynamicTemperatureMeasure), NominalEfficiency(IfcNormalizedRatioMeasure).  The IfcTable is related to IfcPropertyTableValue using IfcMetric and IfcPropertyConstraintRelationship."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_boilertypewater.htm"
    },
    "Pset_BuildingCommon": {
        "properties": {
            "BuildingID": {
                "description": "A unique identifier assigned to a building. A temporary identifier is initially assigned at the time of making a planning application. This temporary identifier is changed to a permanent identifier when the building is registered into a statutory buildings and properties database."
            },
            "ConstructionMethod": {
                "description": "The type of construction action to the building, the project deals with, e.g. new construction, renovation, refurbishment, etc."
            },
            "FireProtectionClass": {
                "description": "Main fire protection class for the building which is assigned from the fire protection classification table as given by the relevant national building code."
            },
            "GrossPlannedArea": {
                "description": "Total planned gross area for the building  Used for programming the building."
            },
            "IsLandmarked": {
                "description": "This builing is listed as a historic building (TRUE), or not (FALSE), or unknown."
            },
            "IsPermanentID": {
                "description": "Indicates whether the identity assigned to a building is permanent (= TRUE) or temporary (=FALSE)."
            },
            "NetPlannedArea": {
                "description": "Total planned net area for the building  Used for programming the building."
            },
            "NumberOfStoreys": {
                "description": "The number of storeys within a building. Captured for those cases where the IfcBuildingStorey entity is not used. Note that if IfcBuilingStorey is asserted and the number of storeys in a building can be determined from it, then this approach should be used in preference to setting a property for the number of storeys."
            },
            "OccupancyType": {
                "description": "Occupancy type for this object. It is defined according to the presiding national building code."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'). Used to store the non-classification driven internal project type."
            },
            "SprinklerProtection": {
                "description": "Indication whether this object is sprinkler protected (TRUE) or not (FALSE)."
            },
            "SprinklerProtectionAutomatic": {
                "description": "Indication whether this object has an automatic sprinkler protection (TRUE) or not (FALSE)."
            },
            "YearOfConstruction": {
                "description": "Year of construction of this building, including expected year of completion."
            },
            "YearOfLastRefurbishment": {
                "description": "Year of last major refurbishment, or reconstruction, of the building (applies to reconstruction works)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_buildingcommon.htm"
    },
    "Pset_BuildingElementCommon": {
        "properties": {
            "FireRating": {
                "description": "Fire rating for the element. It is given according to the national fire safety classification."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "LoadBearing": {
                "description": "Indicates whether the object is intended to carry loads (TRUE) or not (FALSE)."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of an element."
            }
        }
    },
    "Pset_BuildingElementProxyCommon": {
        "properties": {
            "FireRating": {
                "description": "Fire rating for the element. It is given according to the national fire safety classification."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "LoadBearing": {
                "description": "Indicates whether the object is intended to carry loads (TRUE) or not (FALSE)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of the element. It is the total thermal transmittance coefficient through the building element proxy within the direction of the thermal flow (including all materials)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_buildingelementproxycommon.htm"
    },
    "Pset_BuildingElementProxyProvisionForVoid": {
        "properties": {
            "Depth": {
                "description": "The requested depth or thickness of the provision for void."
            },
            "Diameter": {
                "description": "The requested diameter (in elevation) of the provision for void, only provided if the Shape property is set to \"round\"."
            },
            "Height": {
                "description": "The requested height (vertical extension in elevation) of the provision for void\", only provided if the Shape property is set to \"rectangle\"."
            },
            "Shape": {
                "description": "The shape form of the provision for void, the minimum set of agreed values includes 'Rectangle', 'Round', and 'Undefined'."
            },
            "System": {
                "description": "he building service system that requires the provision for voids, e.g. 'Air Conditioning', 'Plumbing', 'Electro', etc."
            },
            "Width": {
                "description": "The requested width (horizontal extension in elevation) of the provision for void, only provided if the Shape property is set to \"rectangle\"."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_buildingelementproxyprovisionforvoid.htm"
    },
    "Pset_BuildingStoreyCommon": {
        "properties": {
            "AboveGround": {
                "description": "Indication whether this building storey is fully above ground (TRUE), or below ground (FALSE), or partially above and below ground (UNKNOWN) - as in sloped terrain."
            },
            "EntranceLevel": {
                "description": "Indication whether this building storey is an entrance level to the building (TRUE), or (FALSE) if otherwise."
            },
            "GrossPlannedArea": {
                "description": "Total planned area for the building storey. Used for programming the building storey."
            },
            "LoadBearingCapacity": {
                "description": "Maximum load bearing capacity of the floor structure throughtout the storey as designed."
            },
            "NetPlannedArea": {
                "description": "Total planned net area for the building storey. Used for programming the building storey."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'). Used to store the non-classification driven internal project type."
            },
            "SprinklerProtection": {
                "description": "Indication whether this object is sprinkler protected (TRUE) or not (FALSE)."
            },
            "SprinklerProtectionAutomatic": {
                "description": "Indication whether this object has an automatic sprinkler protection (TRUE) or not (FALSE). It should only be given, if the property \"SprinklerProtection\" is set to TRUE."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_buildingstoreycommon.htm"
    },
    "Pset_BuildingSystemCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified instance of building system in this project (e.g. 'TRA/EL1'), The reference values depend on the local code of practice."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_buildingsystemcommon.htm"
    },
    "Pset_BuildingUse": {
        "properties": {
            "MarketCategory": {
                "description": "Category of use e.g. residential, commercial, recreation etc."
            },
            "MarketSubCategoriesAvailableFuture": {
                "description": "A list of the sub categories of property that are expected to be available in the future expressed in terms of IfcLabel."
            },
            "MarketSubCategoriesAvailableNow": {
                "description": "A list of the sub categories of property that are currently available expressed in terms of IfcLabel."
            },
            "MarketSubCategory": {
                "description": "Subset of category of use e.g. multi-family, 2 bedroom, low rise."
            },
            "NarrativeText": {
                "description": "Added information relating to the adjacent building use that is not appropriate to the general descriptive text associated with an entity through the inherited IfcRoot.Description."
            },
            "PlanningControlStatus": {
                "description": "Label of zoning category or class, or planning control category for the site or facility."
            },
            "RentalRatesInCategoryFuture": {
                "description": "Range of the cost rates for property expected to be available in the future in the required category."
            },
            "RentalRatesInCategoryNow": {
                "description": "Range of the cost rates for property currently available in the required category."
            },
            "TenureModesAvailableFuture": {
                "description": "A list of the tenure modes that are expected to be available in the future expressed in terms of IfcLabel."
            },
            "TenureModesAvailableNow": {
                "description": "A list of the tenure modes that are currently available expressed in terms of IfcLabel."
            },
            "VacancyRateInCategoryFuture": {
                "description": "Percentage of vacancy found in the particular category expected in the future."
            },
            "VacancyRateInCategoryNow": {
                "description": "Percentage of vacancy found in the particular category currently."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_buildinguse.htm"
    },
    "Pset_BuildingUseAdjacent": {
        "properties": {
            "MarketCategory": {
                "description": "Category of use e.g. residential, commercial, recreation etc."
            },
            "MarketSubCategory": {
                "description": "Subset of category of use e.g. multi-family, 2 bedroom, low rise."
            },
            "NarrativeText": {
                "description": "Added information relating to the adjacent building use that is not appropriate to the general descriptive text associated with an entity through the inherited IfcRoot.Description."
            },
            "PlanningControlStatus": {
                "description": "Label of zoning category or class, or planning control category for the site or facility."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_buildinguseadjacent.htm"
    },
    "Pset_BurnerTypeCommon": {
        "properties": {
            "EnergySource": {
                "description": "Enumeration defining the energy source or fuel cumbusted to generate heat."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_burnertypecommon.htm"
    },
    "Pset_CableCarrierFittingTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_cablecarrierfittingtypecommon.htm"
    },
    "Pset_CableCarrierSegmentTypeCableLadderSegment": {
        "properties": {
            "LadderConfiguration": {
                "description": "Description of the configuration of the ladder structure used."
            },
            "NominalHeight": {
                "description": "The nominal height of the segment."
            },
            "NominalWidth": {
                "description": "The nominal width of the segment."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_cablecarriersegmenttypecableladdersegment.htm"
    },
    "Pset_CableCarrierSegmentTypeCableTraySegment": {
        "properties": {
            "HasCover": {
                "description": "Indication of whether the cable tray has a cover (=TRUE) or not (= FALSE). By default, this value should be set to FALSE.."
            },
            "NominalHeight": {
                "description": "The nominal height of the segment."
            },
            "NominalWidth": {
                "description": "The nominal width of the segment."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_cablecarriersegmenttypecabletraysegment.htm"
    },
    "Pset_CableCarrierSegmentTypeCableTrunkingSegment": {
        "properties": {
            "NominalHeight": {
                "description": "The nominal height of the segment."
            },
            "NominalWidth": {
                "description": "The nominal width of the segment."
            },
            "NumberOfCompartments": {
                "description": "The number of separate internal compartments within the trunking."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_cablecarriersegmenttypecabletrunkingsegment.htm"
    },
    "Pset_CableCarrierSegmentTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_cablecarriersegmenttypecommon.htm"
    },
    "Pset_CableCarrierSegmentTypeConduitSegment": {
        "properties": {
            "ConduitShapeType": {
                "description": "The shape of the conduit segment."
            },
            "IsRigid": {
                "description": "Indication of whether the conduit is rigid (= TRUE) or flexible (= FALSE)."
            },
            "NominalHeight": {
                "description": "The nominal height of the segment."
            },
            "NominalWidth": {
                "description": "The nominal width of the segment."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_cablecarriersegmenttypeconduitsegment.htm"
    },
    "Pset_CableFittingTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_cablefittingtypecommon.htm"
    },
    "Pset_CableSegmentOccurrence": {
        "properties": {
            "CarrierStackNumber": {
                "description": "Number of carrier segments (tray, ladder etc.) that are vertically stacked (vertical is measured as the z-axis of the local coordinate system of the carrier segment)."
            },
            "CurrentCarryingCapasity": {
                "description": "Maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a  specified value. Based on IEC60826-11-13. NOTE: The temperature specified value is maximum Design Ambient Temperature."
            },
            "DesignAmbientTemperature": {
                "description": "The highest and lowest local ambient temperature likely to be encountered."
            },
            "DistanceBetweenParallelCircuits": {
                "description": "Distance measured between parallel circuits."
            },
            "InstallationMethod": {
                "description": "Method of installation of cable/conductor. Installation methods are typically defined by reference in standards such as IEC 60364-5-52, table 52A-1 or BS7671 Appendix 4 Table 4A1 etc. Selection of the value to be used should be determined from such a standard according to local usage."
            },
            "InstallationMethodFlagEnum": {
                "description": "Special installation conditions relating to particular types of installation based on IEC60364-5-52:2001 reference installation methods C and D."
            },
            "IsHorizontalCable": {
                "description": "Indication of whether the cable occurrences are mounted horizontally (= TRUE) or vertically (= FALSE)."
            },
            "IsMountedFlatCable": {
                "description": "Indication of whether the cable occurrences are mounted flat (= TRUE) or in a trefoil pattern (= FALSE)."
            },
            "MaximumCableLength": {
                "description": "Maximum cable length based on voltagedrop. NOTE: This value may also be specified as a constraint within an IFC model if required but is included within the property set at this stage pending implementation of the required capabilities within software applications."
            },
            "MountingMethod": {
                "description": "The method of mounting cable segment occurrences on a cable carrier occurrence from which the method required can be selected. This is for the purpose of carrying out 'worst case' cable sizing calculations and may be a conceptual requirement rather than a statement of the physical occurrences of cable and carrier segments."
            },
            "NumberOfParallelCircuits": {
                "description": "Number of parallel circuits."
            },
            "PowerLoss": {
                "description": "Total loss of power across this cable."
            },
            "SoilConductivity": {
                "description": "Thermal conductivity of soil. Generally, within standards such as IEC 60364-5-52, table 52A-16, the resistivity of soil is required (measured in [SI] units of degK.m /W). This is the reciprocal of the conductivity value and needs to be calculated accordingly."
            },
            "UserCorrectionFactor": {
                "description": "An arbitrary correction factor that may be applied by the user."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_cablesegmentoccurrence.htm"
    },
    "Pset_CableSegmentTypeBusBarSegment": {
        "properties": {
            "IsHorizontalBusbar": {
                "description": "Indication of whether the busbar occurrences are routed horizontally (= TRUE) or vertically (= FALSE)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_cablesegmenttypebusbarsegment.htm"
    },
    "Pset_CableSegmentTypeCableSegment": {
        "properties": {
            "FunctionReliable": {
                "description": "Cable/bus maintain given properties/functions over a given (tested) time and conditions. According to IEC standard."
            },
            "HalogenProof": {
                "description": "Produces small amount of smoke and irritating Deaerator/Gas."
            },
            "HasProtectiveEarth": {
                "description": "One core has protective earth marked insulation, Yellow/Green."
            },
            "MaximumOperatingTemperature": {
                "description": "The maximum temperature at which a cable or bus is certified to operate."
            },
            "MaximumShortCircuitTemperature": {
                "description": "The maximum short circuit temperature at which a cable or bus is certified to operate."
            },
            "NumberOfCores": {
                "description": "The number of cores in Cable/Bus."
            },
            "OverallDiameter": {
                "description": "The overall diameter of a Cable/Bus."
            },
            "RatedTemperature": {
                "description": "The range of allowed temerature that a device is certified to handle. The upper bound of this value is the maximum."
            },
            "RatedVoltage": {
                "description": "The range of allowed voltage that a device is certified to handle. The upper bound of this value is the maximum."
            },
            "ScreenDiameter": {
                "description": "The diameter of the screen around a cable or bus segment (if present)."
            },
            "SelfExtinguishing60332_1": {
                "description": "Self Extinguishing cable/core according to IEC 60332.1."
            },
            "SelfExtinguishing60332_3": {
                "description": "Self Extinguishing cable/core according to IEC 60332.3."
            },
            "SpecialConstruction": {
                "description": "Special construction capabilities like self-supporting, flat devidable cable or bus flat non devidable cable or bus supporting elements inside (steal, textile, concentric conductor). Note that materials used should be agreed between exchange participants before use."
            },
            "Standard": {
                "description": "The designation of the standard applicable for the definition of the Cable/Bus used."
            },
            "Weight": {
                "description": "Weight of cable kg/km."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_cablesegmenttypecablesegment.htm"
    },
    "Pset_CableSegmentTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_cablesegmenttypecommon.htm"
    },
    "Pset_CableSegmentTypeConductorSegment": {
        "properties": {
            "Construction": {
                "description": "Purpose of informing on how the vonductor is constucted (interwined or solid). I.e. Solid (IEV 461-01-06), stranded (IEV 461-01-07), solid-/finestranded(IEV 461-01-11) (not flexible/flexible)."
            },
            "CrossSectionalArea": {
                "description": "Cross section area of the phase(s) lead(s)."
            },
            "Function": {
                "description": "Type of function for which the conductor is intended."
            },
            "Material": {
                "description": "Type of material from which the conductor is constructed."
            },
            "Shape": {
                "description": "Indication of the shape of the conductor."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_cablesegmenttypeconductorsegment.htm"
    },
    "Pset_CableSegmentTypeCoreSegment": {
        "properties": {
            "CoreIdentifier": {
                "description": "The core identification used  Identifiers may be used such as by color (Black, Brown, Grey) or by number (1, 2, 3) or by IEC phase reference (L1, L2, L3) etc."
            },
            "FunctionReliable": {
                "description": "Core maintain given properties/functions over a given (tested) time and conditions. According to (IEC) standard."
            },
            "HalogenProof": {
                "description": "Produces small amount of smoke and irritating deaerator/gas."
            },
            "OverallDiameter": {
                "description": "The overall diameter of a core (maximun space used)."
            },
            "RatedTemperature": {
                "description": "The range of allowed temerature that a device is certified to handle. The upper bound of this value is the maximum."
            },
            "RatedVoltage": {
                "description": "The range of allowed voltage that a device is certified to handle. The upper bound of this value is the maximum."
            },
            "ScreenDiameter": {
                "description": "The diameter of the screen around a core segment (if present)."
            },
            "SelfExtinguishing60332_1": {
                "description": "Self Extinguishing cable/core according to IEC 60332.1."
            },
            "SelfExtinguishing60332_3": {
                "description": "Self Extinguishing cable/core according to IEC 60332.3."
            },
            "SheathColors": {
                "description": "Colour of the core (derived from IEC 60757). Note that the combined color 'GreenAndYellow' shall be used only as Protective Earth (PE) conductors according to the requirements of IEC 60446."
            },
            "Standard": {
                "description": "The designation of the standard applicable for the definition of the core used."
            },
            "Weight": {
                "description": "Weight of core kg/km."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_cablesegmenttypecoresegment.htm"
    },
    "Pset_ChillerPHistory": {
        "properties": {
            "Capacity": {
                "description": "The product of the  ideal capacity and the overall volumetric efficiency of the compressor."
            },
            "CoefficientOfPerformance": {
                "description": "The Coefficient of performance (COP) is the ratio of heat removed to energy input.  The energy input may be obtained by multiplying  Pset_DistributionPortPHistoryGas.FlowRate on the 'Fuel' port of the IfcChiller by Pset_MaterialFuel.LowerHeatingValue. The IfcDistributionPort for fuel has an associated IfcMaterial with fuel properties and is assigned to an IfcPerformanceHistory object nested within this IfcPerformanceHistory object."
            },
            "EnergyEfficiencyRatio": {
                "description": "The Energy efficiency ratio (EER) is the ratio of net cooling capacity to the total input rate of electric power applied.  By definition, the units are BTU/hour per Watt. The input electric power may be obtained from Pset_DistributionPortPHistoryElectrical.RealPower on the 'Power' port of the IfcChiller."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_chillerphistory.htm"
    },
    "Pset_ChillerTypeCommon": {
        "properties": {
            "CapacityCurve": {
                "description": "Chiller cooling capacity is a function of condensing temperature and evaporating temperature, data is in table form, Capacity = f (TempCon, TempEvp), capacity = a1+b1*Tei+c1*Tei\\^2+d1*Tci+e1*Tci\\^2+f1*Tei*Tci.  This table uses multiple input variables; to represent, both DefiningValues and DefinedValues lists are null and IfcTable is attached using IfcPropertyConstraintRelationship and IfcMetric.  Columns are specified in the following order:  1.IfcPowerMeasure:Capacity 2.IfcThermodynamicTemperatureMeasure:CondensingTemperature 3.IfcThermodynamicTemperatureMeasure:EvaporatingTemperature"
            },
            "CoefficientOfPerformanceCurve": {
                "description": "Chiller coefficient of performance (COP) is function of condensing temperature and evaporating temperature, data is in table form, COP= f (TempCon, TempEvp), COP = a2+b2*Tei+c2*Tei\\^2+d2*Tci+e2*Tci\\^2+f2*Tei*Tci.  This table uses multiple input variables; to represent, both DefiningValues and DefinedValues lists are null and IfcTable is attached using IfcPropertyConstraintRelationship and IfcMetric.  Columns are specified in the following order:  1.IfcPositiveRatioMeasure:CoefficientOfPerformance 2.IfcThermodynamicTemperatureMeasure:CondensingTemperature 3.IfcThermodynamicTemperatureMeasure:EvaporatingTemperature"
            },
            "FullLoadRatioCurve": {
                "description": "Ratio of actual power to full load power as a quadratic function of part load, at certain condensing and evaporating temperature, FracFullLoadPower = f ( PartLoadRatio)."
            },
            "NominalCapacity": {
                "description": "Nominal cooling capacity of chiller at standardized conditions as defined by the agency having jurisdiction."
            },
            "NominalCondensingTemperature": {
                "description": "Chiller condensing temperature."
            },
            "NominalEfficiency": {
                "description": "Nominal chiller efficiency under nominal conditions."
            },
            "NominalEvaporatingTemperature": {
                "description": "Chiller evaporating temperature."
            },
            "NominalHeatRejectionRate": {
                "description": "Sum of the refrigeration effect and the heat equivalent of the power input to the compressor."
            },
            "NominalPowerConsumption": {
                "description": "Nominal total power consumption."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_chillertypecommon.htm"
    },
    "Pset_ChimneyCommon": {
        "properties": {
            "FireRating": {
                "description": "Fire rating for the element. It is given according to the national fire safety classification."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "LoadBearing": {
                "description": "Indicates whether the object is intended to carry loads (TRUE) or not (FALSE)."
            },
            "NumberOfDrafts": {
                "description": "Number of the chimney drafts, continuous holes in the chimney through which the air passes, within the single chimney."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of an element. Here the total thermal transmittance coefficient through the chimney within the direction of the thermal flow (including all materials)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_chimneycommon.htm"
    },
    "Pset_CivilElementCommon": {
        "properties": {
            "Reference": {},
            "Status": {}
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_civilelementcommon.htm"
    },
    "Pset_CoilOccurrence": {
        "properties": {
            "HasSoundAttenuation": {
                "description": "TRUE if the coil has sound attenuation, FALSE if it does not."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_coiloccurrence.htm"
    },
    "Pset_CoilPHistory": {
        "properties": {
            "AirPressureDropCurve": {
                "description": "Air pressure drop curve, pressure drop \u2013 flow rate curve, AirPressureDrop = f (AirflowRate)."
            },
            "AtmosphericPressure": {
                "description": "Ambient atmospheric pressure."
            },
            "FaceVelocity": {
                "description": "Air velocity through the coil."
            },
            "SoundCurve": {
                "description": "Regenerated sound versus air-flow rate."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_coilphistory.htm"
    },
    "Pset_CoilTypeCommon": {
        "properties": {
            "AirflowRateRange": {
                "description": "Possible range of airflow that can be delivered.  For cases where there is no airflow across the coil (e.g. electric coil in a floor slab), then the value is zero."
            },
            "NominalLatentCapacity": {
                "description": "Nominal latent capacity."
            },
            "NominalSensibleCapacity": {
                "description": "Nominal sensible capacity."
            },
            "NominalUA": {
                "description": "Nominal UA value."
            },
            "OperationalTemperatureRange": {
                "description": "Allowable operational air temperature range."
            },
            "PlacementType": {
                "description": "Indicates the placement of the coil. FLOOR indicates an under floor heater (if coil type is WATERHEATINGCOIL or ELECTRICHEATINGCOIL);  CEILING indicates a cooling ceiling (if coil type is WATERCOOLINGCOIL); UNIT indicates that the coil is part of a cooling or heating unit, like cooled beam, etc."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_coiltypecommon.htm"
    },
    "Pset_CoilTypeHydronic": {
        "properties": {
            "BypassFactor": {
                "description": "Fraction of air that is bypassed by the coil (0-1)."
            },
            "CoilConnectionDirection": {
                "description": "Coil connection direction (facing into the air stream)."
            },
            "CoilCoolant": {
                "description": "The fluid used for heating or cooling used by the hydronic coil."
            },
            "CoilFaceArea": {
                "description": "Coil face area in the direction against air the flow."
            },
            "CoilFluidArrangement": {
                "description": "Fluid flow arrangement of the coil."
            },
            "FluidPressureRange": {
                "description": "Allowable water working pressure range inside the tube."
            },
            "HeatExchangeSurfaceArea": {
                "description": "Heat exchange surface area associated with U-value."
            },
            "PrimarySurfaceArea": {
                "description": "Primary heat transfer surface area of the tubes and headers."
            },
            "SecondarySurfaceArea": {
                "description": "Secondary heat transfer surface area created by fins."
            },
            "SensibleHeatRatio": {
                "description": "Air-side sensible heat ratio, or fraction of sensible heat transfer to the total heat transfer."
            },
            "TotalUACurves": {
                "description": "Total UA curves, UA - air and water velocities, UA = [(C1 * AirFlowRate\\^0.8)\\^-1 + (C2 * WaterFlowRate\\^0.8)\\^-1]\\^-1.  Note: as two variables are used, DefiningValues and DefinedValues are null, and values are stored in IfcTable in the following order: AirFlowRate,WaterFlowRate,UA.  The IfcTable is related to IfcPropertyTableValue using IfcMetric and IfcPropertyConstraintRelationship."
            },
            "WaterPressureDropCurve": {
                "description": "Water pressure drop curve, pressure drop \u2013 flow rate curve, WaterPressureDrop = f(WaterflowRate)."
            },
            "WetCoilFraction": {
                "description": "Fraction of coil surface area that is wet (0-1)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_coiltypehydronic.htm"
    },
    "Pset_ColumnCommon": {
        "properties": {
            "FireRating": {
                "description": "Fire rating for the element. It is given according to the national fire safety classification."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "LoadBearing": {
                "description": "Indicates whether the object is intended to carry loads (TRUE) or not (FALSE)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Roll": {
                "description": "Rotation against the longitudinal axis - relative to the global  X direction for all columns that are vertical in regard to the global coordinate system (Profile direction equals global X is Roll = 0.). For all non-vertical columns the following applies:  Roll is relative to the global Z direction f(Profile direction of non-vertical columns that equals global Z is Roll = 0.)"
            },
            "Slope": {
                "description": "Slope angle - relative to horizontal (0.0 degrees)."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of the element. Here the total thermal transmittance coefficient through the column within the direction of the thermal flow (including all materials)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_columncommon.htm"
    },
    "Pset_CommunicationsAppliancePHistory": {
        "properties": {
            "PowerState": {
                "description": "Indicates the power state of the device where True is on and False is off."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_communicationsappliancephistory.htm"
    },
    "Pset_CommunicationsApplianceTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_communicationsappliancetypecommon.htm"
    },
    "Pset_CompressorPHistory": {
        "properties": {
            "CoefficientOfPerformance": {
                "description": "Coefficient of performance (COP)."
            },
            "CompressionEfficiency": {
                "description": "Ratio of the work required for isentropic compression of the gas to the work delivered to the gas within the compression volume (as obtained by measurement)."
            },
            "CompressorCapacity": {
                "description": "The product of the  ideal capacity and the overall volumetric efficiency of the compressor."
            },
            "CompressorTotalEfficiency": {
                "description": "Ratio of the thermal cooling capacity to electrical input."
            },
            "CompressorTotalHeatGain": {
                "description": "Compressor total heat gain."
            },
            "EnergyEfficiencyRatio": {
                "description": "Energy efficiency ratio (EER)."
            },
            "FrictionHeatGain": {
                "description": "Friction heat gain."
            },
            "FullLoadRatio": {
                "description": "Ratio of actual power to full load power as a quadratic function of part load, at certain condensing and evaporating temperature, FracFullLoadPower = f ( PartLoadRatio)."
            },
            "InputPower": {
                "description": "Input power to the compressor motor."
            },
            "IsentropicEfficiency": {
                "description": "Ratio of the work required for isentropic compression of the gas to work input to the compressor shaft."
            },
            "LubricantPumpHeatGain": {
                "description": "Lubricant pump heat gain."
            },
            "MechanicalEfficiency": {
                "description": "Ratio of the work (as measured) delivered to the gas to the work input to the compressor shaft."
            },
            "ShaftPower": {
                "description": "The actual shaft power input to the compressor."
            },
            "VolumetricEfficiency": {
                "description": "Ratio of the actual volume of gas entering the compressor to the theoretical displacement of the compressor."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_compressorphistory.htm"
    },
    "Pset_CompressorTypeCommon": {
        "properties": {
            "CompressorSpeed": {
                "description": "Compressor speed."
            },
            "HasHotGasBypass": {
                "description": "Whether or not hot gas bypass is provided for the compressor. TRUE = Yes, FALSE = No."
            },
            "IdealCapacity": {
                "description": "Compressor capacity under ideal conditions."
            },
            "IdealShaftPower": {
                "description": "Compressor shaft power under ideal conditions."
            },
            "ImpellerDiameter": {
                "description": "Diameter of compressor impeller - used to scale performance of geometrically similar compressors."
            },
            "MaximumPartLoadRatio": {
                "description": "Maximum part load ratio as a fraction of nominal capacity."
            },
            "MinimumPartLoadRatio": {
                "description": "Minimum part load ratio as a fraction of nominal capacity."
            },
            "NominalCapacity": {
                "description": "Compressor nameplate capacity."
            },
            "PowerSource": {
                "description": "Type of power driving the compressor."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "RefrigerantClass": {
                "description": "Refrigerant class used by the compressor."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_compressortypecommon.htm"
    },
    "Pset_ConcreteElementGeneral": {
        "properties": {
            "ConcreteCover": {
                "description": "The protective concrete cover at the reinforcing bars according to local building regulations."
            },
            "ConcreteCoverAtLinks": {
                "description": "The protective concrete cover at the reinforcement links according to local building regulations."
            },
            "ConcreteCoverAtMainBars": {
                "description": "The protective concrete cover at the main reinforcing bars according to local building regulations."
            },
            "ConstructionMethod": {
                "description": "Designator for whether the concrete element is constructed on site or prefabricated. Allowed values are: 'In-Situ' vs 'Precast'."
            },
            "ConstructionToleranceClass": {
                "description": "Classification designation of the on-site construction tolerances according to local standards."
            },
            "DimensionalAccuracyClass": {
                "description": "Classification designation of the dimensional accuracy requirement according to local standards."
            },
            "ExposureClass": {
                "description": "Classification of exposure to environmental conditions, usually specified in accordance with the concrete design code which is applied in the project."
            },
            "ReinforcementAreaRatio": {
                "description": "The required ratio of the effective area of the reinforcement to the effective area of the concrete At any section of a reinforced concrete structural element."
            },
            "ReinforcementStrengthClass": {
                "description": "Classification of the reinforcement strength in accordance with the concrete design code which is applied in the project. The reinforcing strength class often combines strength and ductility."
            },
            "ReinforcementVolumeRatio": {
                "description": "The required ratio of the effective mass of the reinforcement to the effective volume of the concrete of a reinforced concrete structural element."
            },
            "StrengthClass": {
                "description": "Classification of the concrete strength in accordance with the concrete design code which is applied in the project."
            },
            "StructuralClass": {
                "description": "The structural class defined for the concrete structure (e.g. '1')."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_concreteelementgeneral.htm"
    },
    "Pset_CondenserPHistory": {
        "properties": {
            "CompressorCondenserHeatGain": {
                "description": "Heat gain between condenser inlet to compressor outlet."
            },
            "CompressorCondenserPressureDrop": {
                "description": "Pressure drop between condenser inlet and compressor outlet."
            },
            "CondenserMeanVoidFraction": {
                "description": "Mean void fraction in condenser."
            },
            "CondensingTemperature": {
                "description": "Refrigerant condensing temperature."
            },
            "ExteriorHeatTransferCoefficient": {
                "description": "Exterior heat transfer coefficient associated with exterior surface area."
            },
            "HeatRejectionRate": {
                "description": "Sum of the refrigeration effect and the heat equivalent of the power input to the compressor."
            },
            "InteriorHeatTransferCoefficient": {
                "description": "Interior heat transfer coefficient associated with interior surface area."
            },
            "LogarithmicMeanTemperatureDifference": {
                "description": "Logarithmic mean temperature difference between refrigerant and water or air."
            },
            "RefrigerantFoulingResistance": {
                "description": "Fouling resistance on the refrigerant side."
            },
            "UAcurves": {
                "description": "UV = f (VExterior, VInterior), UV as a function of interior and exterior fluid flow velocity at the entrance."
            },
            "WaterFoulingResistance": {
                "description": "Fouling resistance on water/air side."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_condenserphistory.htm"
    },
    "Pset_CondenserTypeCommon": {
        "properties": {
            "ExternalSurfaceArea": {
                "description": "External surface area (both primary and secondary area)."
            },
            "InternalRefrigerantVolume": {
                "description": "Internal volume of condenser (refrigerant side)."
            },
            "InternalSurfaceArea": {
                "description": "Internal surface area."
            },
            "InternalWaterVolume": {
                "description": "Internal volume of condenser (water side)."
            },
            "NominalHeatTransferArea": {
                "description": "Nominal heat transfer surface area associated with nominal overall heat transfer coefficient."
            },
            "NominalHeatTransferCoefficient": {
                "description": "Nominal overall heat transfer coefficient associated with nominal heat transfer area."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "RefrigerantClass": {
                "description": "Refrigerant class used by the condenser."
            },
            "Status": {}
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_condensertypecommon.htm"
    },
    "Pset_Condition": {
        "properties": {
            "AssessmentCondition": {
                "description": "The overall condition of a product based on an assessment of the contributions to the overall condition made by the various criteria considered. The meanings given to the values of assessed condition should be agreed and documented by local agreements. For instance, is overall condition measured on a scale of 1 - 10 or by assigning names such as Good, OK, Poor."
            },
            "AssessmentDate": {
                "description": "Date on which the overall condition is assessed"
            },
            "AssessmentDescription": {
                "description": "Qualitative description of the condition."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_condition.htm"
    },
    "Pset_ConstructionResource": {
        "properties": {
            "ActualCompletion": {
                "description": "The actual completion percentage of the allocation."
            },
            "ActualCost": {
                "description": "The actual cost on behalf of the resource allocation."
            },
            "ActualWork": {
                "description": "The actual work on behalf of the resource allocation."
            },
            "RemainingCost": {
                "description": "The remaining cost on behalf of the resource allocation."
            },
            "RemainingWork": {
                "description": "The remaining work on behalf of the resource allocation."
            },
            "ScheduleCompletion": {
                "description": "The scheduled completion percentage of the allocation."
            },
            "ScheduleCost": {
                "description": "The budgeted cost on behalf of the resource allocation."
            },
            "ScheduleWork": {
                "description": "The scheduled work on behalf of the resource allocation."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcconstructionmgmtdomain/pset/pset_constructionresource.htm"
    },
    "Pset_ControllerPHistory": {
        "properties": {
            "Quality": {
                "description": "Indicates the quality of measurement or failure condition, which may be further qualified by the Status.  True: measured values are considered reliable; False: measured values are considered not reliable (i.e. a fault has been detected); Unknown: reliability of values is uncertain."
            },
            "Status": {
                "description": "Indicates an error code or identifier, whose meaning is specific to the particular automation system.  Example values include: 'ConfigurationError', 'NotConnected', 'DeviceFailure', 'SensorFailure', 'LastKnown, 'CommunicationsFailure', 'OutOfService'."
            },
            "Value": {
                "description": "Indicates values over time which may be recorded continuously or only when changed beyond a particular deadband.  The range of possible values is defined by the Value property on the corresponding occurrence property set (Pset_ControllerTypeFloating, Pset_ControllerTypeProportional, Pset_ControllerTypeMultiPosition, or Pset_ControllerTypeTwoPosition)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_controllerphistory.htm"
    },
    "Pset_ControllerTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_controllertypecommon.htm"
    },
    "Pset_ControllerTypeFloating": {
        "properties": {
            "ControlType": {
                "description": "The type of signal modification effected and applicable ports: "
            },
            "Labels": {
                "description": "Table mapping values to labels, where such labels indicate transition points such as 'Hi', 'Lo', 'HiHi', or 'LoLo'."
            },
            "Range": {
                "description": "The physical range of values supported by the device."
            },
            "SignalFactor": {
                "description": "Factor multiplied onto offset signal."
            },
            "SignalOffset": {
                "description": "Offset constant added to modfied signal."
            },
            "SignalTime": {
                "description": "Time factor used for integral and running average controllers."
            },
            "Value": {
                "description": "The expected range and default value.  While the property data type is IfcReal (to support all cases including when the units are unknown), a unit may optionally be provided to indicate the measure and unit.  The LowerLimitValue and UpperLimitValue must fall within the physical Range and may be used to determine extents when charting Pset_ControllerPHistory.Value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_controllertypefloating.htm"
    },
    "Pset_ControllerTypeMultiPosition": {
        "properties": {
            "ControlType": {
                "description": "The type of signal modification effected and applicable ports:"
            },
            "Labels": {
                "description": "Table mapping values to labels, where each entry corresponds to an integer within the ValueRange."
            },
            "Range": {
                "description": "The physical range of values supported by the device."
            },
            "Value": {
                "description": "The expected range and default value.  The LowerLimitValue and UpperLimitValue must fall within the physical Range."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_controllertypemultiposition.htm"
    },
    "Pset_ControllerTypeProgrammable": {
        "properties": {
            "Application": {
                "description": "Indicates application of controller."
            },
            "ControlType": {
                "description": "The type of discrete digital controller: "
            },
            "FirmwareVersion": {
                "description": "Indicates version of device firmware according to device manufacturer."
            },
            "SoftwareVersion": {
                "description": "Indicates version of application software according to systems integrator."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_controllertypeprogrammable.htm"
    },
    "Pset_ControllerTypeProportional": {
        "properties": {
            "ControlType": {
                "description": "The type of signal modification. PROPORTIONAL: Output is proportional to the control error. The gain of a proportional control (Kp) will have the effect of reducing the rise time and reducing , but never eliminating, the steady-state error of the variable controlled.  PROPORTIONALINTEGRAL: Part of the output is proportional to the control error and part is proportional to the time integral of the control error. Adding the gain of an integral control (Ki) will have the effect of eliminating the steady-state error of the variable controlled, but it may make the transient response worse.  PROPORTIONALINTEGRALDERIVATIVE: Part of the output is proportional to the control error, part is proportional to the time integral of the control error and part is proportional to the time derivative of the control error. Adding the gain of a derivative control (Kd) will have the effect of increasing the stability of the system, reducing the overshoot, and improving the transient response of the variable controlled."
            },
            "DerivativeConstant": {
                "description": "The derivative gain factor of the controller (usually referred to as Kd).  Asserted where ControlType is PROPORTIONALINTEGRALDERIVATIVE."
            },
            "IntegralConstant": {
                "description": "The integral gain factor of the controller (usually referred to as Ki).  Asserted where ControlType is PROPORTIONALINTEGRAL or PROPORTIONALINTEGRALDERIVATIVE."
            },
            "Labels": {
                "description": "Table mapping values to labels, where such labels indicate transition points such as 'Hi', 'Lo', 'HiHi', or 'LoLo'."
            },
            "ProportionalConstant": {
                "description": "The proportional gain factor of the controller (usually referred to as Kp)."
            },
            "Range": {
                "description": "The physical range of values."
            },
            "SignalTimeDecrease": {
                "description": "Time factor used for exponential decrease."
            },
            "SignalTimeIncrease": {
                "description": "Time factor used for exponential increase."
            },
            "Value": {
                "description": "The expected range and default value.  While the property data type is IfcReal (to support all cases including when the units are unknown), a unit may optionally be provided to indicate the measure and unit."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_controllertypeproportional.htm"
    },
    "Pset_ControllerTypeTwoPosition": {
        "properties": {
            "ControlType": {
                "description": "The type of signal modification effected and applicable ports:"
            },
            "Labels": {
                "description": "Table mapping values to labels, where such labels indicate the meanings of True and False, such as 'Open' and 'Closed'"
            },
            "Polarity": {
                "description": "True indicates normal polarity; False indicates reverse polarity."
            },
            "Value": {
                "description": "The default value such as normally-closed or normally-open."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_controllertypetwoposition.htm"
    },
    "Pset_CooledBeamPHistory": {
        "properties": {
            "BeamCoolingCapacity": {
                "description": "Cooling capacity of beam. This excludes cooling capacity of supply air."
            },
            "BeamHeatingCapacity": {
                "description": "Heating capacity of beam. This excludes heating capacity of supply air."
            },
            "CoolingWaterFlowRate": {
                "description": "Water flow rate for cooling."
            },
            "CorrectionFactorForCooling": {
                "description": "Correction factor k as a function of water flow rate (used to calculate cooling capacity)."
            },
            "CorrectionFactorForHeating": {
                "description": "Correction factor k as a function of water flow rate (used to calculate heating capacity)."
            },
            "HeatingWaterFlowRate": {
                "description": "Water flow rate for heating."
            },
            "ReturnWaterTemperatureCooling": {
                "description": "Return water temperature in cooling mode."
            },
            "ReturnWaterTemperatureHeating": {
                "description": "Return water temperature in heating mode."
            },
            "SupplyWaterTemperatureCooling": {
                "description": "Supply water temperature in cooling mode."
            },
            "SupplyWaterTemperatureHeating": {
                "description": "Supply water temperature in heating mode."
            },
            "TotalCoolingCapacity": {
                "description": "Total cooling capacity. This includes cooling capacity of beam and cooling capacity of supply air."
            },
            "TotalHeatingCapacity": {
                "description": "Total heating capacity. This includes heating capacity of beam and heating capacity of supply air."
            },
            "WaterPressureDropCurves": {
                "description": "Water pressure drop as function of water flow rate."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_cooledbeamphistory.htm"
    },
    "Pset_CooledBeamPHistoryActive": {
        "properties": {
            "AirFlowRate": {
                "description": "Air flow rate."
            },
            "AirPressureDropCurves": {
                "description": "Air pressure drop as function of air flow rate."
            },
            "Throw": {
                "description": "Distance cooled beam throws the air."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_cooledbeamphistoryactive.htm"
    },
    "Pset_CooledBeamTypeActive": {
        "properties": {
            "AirFlowConfiguration": {
                "description": "Air flow configuration type of cooled beam."
            },
            "AirflowRateRange": {
                "description": "Possible range of airflow that can be delivered."
            },
            "ConnectionSize": {
                "description": "Duct connection diameter."
            },
            "SupplyAirConnectionType": {
                "description": "The manner in which the pipe connection is made to the cooled beam."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_cooledbeamtypeactive.htm"
    },
    "Pset_CooledBeamTypeCommon": {
        "properties": {
            "CoilLength": {
                "description": "Length of coil."
            },
            "CoilWidth": {
                "description": "Width of coil."
            },
            "FinishColor": {
                "description": "Finish color for cooled beam."
            },
            "IntegratedLightingType": {
                "description": "Integrated lighting in cooled beam."
            },
            "IsFreeHanging": {
                "description": "Is it free hanging type (not mounted in a false ceiling)?"
            },
            "NominalCoolingCapacity": {
                "description": "Nominal cooling capacity."
            },
            "NominalHeatingCapacity": {
                "description": "Nominal heating capacity."
            },
            "NominalReturnWaterTemperatureCooling": {
                "description": "Nominal return water temperature (refers to nominal cooling capacity)."
            },
            "NominalReturnWaterTemperatureHeating": {
                "description": "Nominal return water temperature (refers to nominal heating capacity)."
            },
            "NominalSupplyWaterTemperatureCooling": {
                "description": "Nominal supply water temperature (refers to nominal cooling capacity)."
            },
            "NominalSupplyWaterTemperatureHeating": {
                "description": "Nominal supply water temperature (refers to nominal heating capacity)."
            },
            "NominalSurroundingHumidityCooling": {
                "description": "Nominal surrounding humidity (refers to nominal cooling capacity)."
            },
            "NominalSurroundingTemperatureCooling": {
                "description": "Nominal surrounding temperature (refers to nominal cooling capacity)."
            },
            "NominalSurroundingTemperatureHeating": {
                "description": "Nominal surrounding temperature (refers to nominal heating capacity)."
            },
            "NominalWaterFlowCooling": {
                "description": "Nominal water flow (refers to nominal cooling capacity)."
            },
            "NominalWaterFlowHeating": {
                "description": "Nominal water flow (refers to nominal heating capacity)."
            },
            "PipeConnection": {
                "description": "The manner in which the pipe connection is made to the cooled beam."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "WaterFlowControlSystemType": {
                "description": "Factory fitted waterflow control system."
            },
            "WaterPressureRange": {
                "description": "Allowable water circuit working pressure range."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_cooledbeamtypecommon.htm"
    },
    "Pset_CoolingTowerPHistory": {
        "properties": {
            "Capacity": {
                "description": "Cooling tower capacity in terms of heat transfer rate of the cooling tower between air stream and water stream."
            },
            "HeatTransferCoefficient": {
                "description": "Heat transfer coefficient-area product."
            },
            "Performance": {
                "description": "Water temperature change as a function of wet-bulb temperature, water entering temperature, water flow rate, air flow rate, Tdiff = f ( Twet-bulb, Twater,in, mwater, mair)."
            },
            "SumpHeaterPower": {
                "description": "Electrical heat power of sump heater."
            },
            "UACurve": {
                "description": "UA value as a  function of fan speed at certain water flow rate, UA = f ( fan speed)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_coolingtowerphistory.htm"
    },
    "Pset_CoolingTowerTypeCommon": {
        "properties": {
            "AmbientDesignDryBulbTemperature": {
                "description": "Ambient design dry bulb temperature used for selecting the cooling tower."
            },
            "AmbientDesignWetBulbTemperature": {
                "description": "Ambient design wet bulb temperature used for selecting the cooling tower."
            },
            "BasinReserveVolume": {
                "description": "Volume between operating and overflow levels in cooling tower basin."
            },
            "CapacityControl": {
                "description": "FanCycling: Fan is cycled on and off to control duty. TwoSpeedFan: Fan is switched between low and high speed to control duty. VariableSpeedFan: Fan speed is varied to control duty. DampersControl: Dampers modulate the air flow to control duty. BypassValveControl: Bypass valve modulates the water flow to control duty. MultipleSeriesPumps: Turn on/off multiple series pump to control duty. TwoSpeedPump: Switch between high/low pump speed to control duty. VariableSpeedPump: vary pump speed to control duty."
            },
            "CircuitType": {
                "description": "OpenCircuit: Exposes water directly to the cooling atmosphere. CloseCircuit: The fluid is separated from the atmosphere by a heat exchanger. Wet: The air stream or the heat exchange surface is evaporatively cooled. Dry: No evaporation into the air stream. DryWet: A combination of a dry tower and a wet tower."
            },
            "ControlStrategy": {
                "description": "FixedExitingWaterTemp: The capacity is controlled to maintain a fixed exiting water temperature. WetBulbTempReset: The set-point is reset based on the wet-bulb temperature."
            },
            "FlowArrangement": {
                "description": "CounterFlow: Air and water flow enter in different directions. CrossFlow: Air and water flow are perpendicular. ParallelFlow: air and water flow enter in same directions."
            },
            "LiftElevationDifference": {
                "description": "Elevation difference between cooling tower sump and the top of the tower."
            },
            "NominalCapacity": {
                "description": "Nominal cooling tower capacity in terms of heat transfer rate of the cooling tower between air stream and water stream at nominal conditions."
            },
            "NumberOfCells": {
                "description": "Number of cells in one cooling tower unit."
            },
            "OperationTemperatureRange": {
                "description": "Allowable operation ambient air temperature range."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "SprayType": {
                "description": "SprayFilled: Water is sprayed into airflow. SplashTypeFill: water cascades over successive rows of splash bars. FilmTypeFill: water flows in a thin layer over closely spaced sheets."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "WaterRequirement": {
                "description": "Make-up water requirements."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_coolingtowertypecommon.htm"
    },
    "Pset_CoveringCeiling": {
        "properties": {
            "Permeability": {
                "description": "Ratio of the permeability of the ceiling. The ration can be used to indicate an open ceiling (that enables identification of whether ceiling construction should be considered as impeding distribution of sprinkler water, light etc. from installations within the ceiling area)."
            },
            "TileLength": {
                "description": "Length of ceiling tiles. The size information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the size properties, provided in the attached property set, the geometric parameters take precedence."
            },
            "TileWidth": {
                "description": "Width of ceiling tiles. The size information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the size properties, provided in the attached property set, the geometric parameters take precedence."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_coveringceiling.htm"
    },
    "Pset_CoveringCommon": {
        "properties": {
            "AcousticRating": {
                "description": "Acoustic rating for this object. It is giving according to the national building code. It indicates the sound transmission resistance of this object by an index ration (instead of providing full sound absorbtion values)."
            },
            "Combustible": {
                "description": "Indication whether the object is made from combustible material (TRUE) or not (FALSE)."
            },
            "Finish": {
                "description": "Finish selection for this object. Here specification of the surface finish for informational purposes."
            },
            "FireRating": {
                "description": "Fire rating for this object. It is given according to the national fire safety classification."
            },
            "FlammabilityRating": {
                "description": "Flammability Rating for this object. It is given according to the national building code that governs the rating of flammability for materials."
            },
            "FragilityRating": {
                "description": "Indication on the fragility of the covering (e.g., under fire conditions).  It is given according to the national building code that might provide a classification for fragility."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "SurfaceSpreadOfFlame": {
                "description": "Indication on how the flames spread around the surface, It is given according to the national building code that governs the fire behaviour for materials."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of an element.  Here the total thermal transmittance coefficient through the covering (including all materials)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_coveringcommon.htm"
    },
    "Pset_CoveringFlooring": {
        "properties": {
            "HasAntiStaticSurface": {
                "description": "Indication whether the surface finish is designed to prevent electrostatic charge (TRUE) or not (FALSE)."
            },
            "HasNonSkidSurface": {
                "description": "Indication whether the surface finish is designed to prevent slippery (TRUE) or not (FALSE)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_coveringflooring.htm"
    },
    "Pset_CurtainWallCommon": {
        "properties": {
            "AcousticRating": {
                "description": "Acoustic rating for this object. It is provided according to the national building code. It indicates the sound transmission resistance of this object by an index ratio (instead of providing full sound absorbtion values)."
            },
            "Combustible": {
                "description": "Indication whether the object is made from combustible material (TRUE) or not (FALSE)."
            },
            "FireRating": {
                "description": "Fire rating given according to the national fire safety classification."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "SurfaceSpreadOfFlame": {
                "description": "Indication on how the flames spread around the surface, It is given according to the national building code that governs the fire behaviour for materials."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of a material. Here the total thermal transmittance coefficient through the wall (including all materials)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_curtainwallcommon.htm"
    },
    "Pset_DamperOccurrence": {
        "properties": {
            "SizingMethod": {
                "description": "Identifies whether the damper is sized nominally or with exact measurements:"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_damperoccurrence.htm"
    },
    "Pset_DamperPHistory": {
        "properties": {
            "AirFlowRate": {
                "description": "Air flow rate."
            },
            "BladePositionAngle": {
                "description": "Blade position angle; angle between the blade and flow direction ( 0 - 90)."
            },
            "DamperPosition": {
                "description": "Damper position (0-1); damper position ( 0=closed=90deg position angle, 1=open=0deg position angle."
            },
            "Leakage": {
                "description": "Air leakage rate."
            },
            "PressureDrop": {
                "description": "Pressure drop."
            },
            "PressureLossCoefficient": {
                "description": "Pressure loss coefficient."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_damperphistory.htm"
    },
    "Pset_DamperTypeCommon": {
        "properties": {
            "BladeAction": {
                "description": "Blade action."
            },
            "BladeEdge": {
                "description": "Blade edge."
            },
            "BladeShape": {
                "description": "Blade shape. Flat means triple V-groove."
            },
            "BladeThickness": {
                "description": "The thickness of the damper blade."
            },
            "CloseOffRating": {
                "description": "Close off rating."
            },
            "FaceArea": {
                "description": "Face area open to the airstream."
            },
            "FrameDepth": {
                "description": "The length (or depth) of the damper frame."
            },
            "FrameThickness": {
                "description": "The thickness of the damper frame material."
            },
            "FrameType": {
                "description": "The type of frame used by the damper (e.g., Standard, Single Flange, Single Reversed Flange, Double Flange, etc.)."
            },
            "LeakageCurve": {
                "description": "Leakage versus pressure drop; Leakage = f (pressure)."
            },
            "LeakageFullyClosed": {
                "description": "Leakage when fully closed."
            },
            "LossCoefficentCurve": {
                "description": "Loss coefficient \u2013 blade position angle curve; ratio of pressure drop to velocity pressure versus blade angle; C = f (blade angle position)."
            },
            "MaximumAirFlowRate": {
                "description": "Maximum allowable air flow rate."
            },
            "MaximumWorkingPressure": {
                "description": "Maximum working pressure."
            },
            "NominalAirFlowRate": {
                "description": "Nominal air flow rate."
            },
            "NumberofBlades": {
                "description": "Number of blades."
            },
            "OpenPressureDrop": {
                "description": "Total pressure drop across damper."
            },
            "Operation": {
                "description": "The operational mechanism for the damper operation."
            },
            "Orientation": {
                "description": "The intended orientation for the damper as specified by the manufacturer."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "RegeneratedSoundCurve": {
                "description": "Regenerated sound versus air flow rate."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "TemperatureRange": {
                "description": "Temperature range."
            },
            "TemperatureRating": {
                "description": "Temperature rating."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_dampertypecommon.htm"
    },
    "Pset_DamperTypeControlDamper": {
        "properties": {
            "ControlDamperOperation": {
                "description": "The inherent characteristic of the control damper operation."
            },
            "TorqueRange": {
                "description": "Torque range: minimum operational torque to maximum allowable torque."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_dampertypecontroldamper.htm"
    },
    "Pset_DamperTypeFireDamper": {
        "properties": {
            "ActuationType": {
                "description": "Enumeration that identifies the different types of dampers."
            },
            "ClosureRatingEnum": {
                "description": "Enumeration that identifies the closure rating for the damper."
            },
            "FireResistanceRating": {
                "description": "Measure of the fire resistance rating in hours (e.g., 1.5 hours, 2 hours, etc.)."
            },
            "FusibleLinkTemperature": {
                "description": "The temperature that the fusible link melts."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_dampertypefiredamper.htm"
    },
    "Pset_DamperTypeFireSmokeDamper": {
        "properties": {
            "ActuationType": {
                "description": "Enumeration that identifies the different types of dampers."
            },
            "ClosureRatingEnum": {
                "description": "Enumeration that identifies the closure rating for the damper."
            },
            "ControlType": {
                "description": "The type of control used to operate the damper (e.g., Open/Closed Indicator, Resetable Temperature Sensor, Temperature Override, etc.)."
            },
            "FireResistanceRating": {
                "description": "Measure of the fire resistance rating in hours (e.g., 1.5 hours, 2 hours, etc.)."
            },
            "FusibleLinkTemperature": {
                "description": "The temperature that the fusible link melts."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_dampertypefiresmokedamper.htm"
    },
    "Pset_DamperTypeSmokeDamper": {
        "properties": {
            "ControlType": {
                "description": "The type of control used to operate the damper (e.g., Open/Closed Indicator, Resetable Temperature Sensor, Temperature Override, etc.) ."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_dampertypesmokedamper.htm"
    },
    "Pset_DiscreteAccessoryColumnShoe": {
        "properties": {
            "ColumnShoeBasePlateDepth": {
                "description": "The depth of the column shoe base plate."
            },
            "ColumnShoeBasePlateThickness": {
                "description": "The thickness of the column shoe base plate."
            },
            "ColumnShoeBasePlateWidth": {
                "description": "The width of the column shoe base plate."
            },
            "ColumnShoeCasingDepth": {
                "description": "The depth of the column shoe casing."
            },
            "ColumnShoeCasingHeight": {
                "description": "The height of the column shoe casing."
            },
            "ColumnShoeCasingWidth": {
                "description": "The width of the column shoe casing."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedcomponentelements/pset/pset_discreteaccessorycolumnshoe.htm"
    },
    "Pset_DiscreteAccessoryCornerFixingPlate": {
        "properties": {
            "CornerFixingPlateFlangeWidthInPlaneX": {
                "description": "The flange width of the L-shaped corner plate in plane X."
            },
            "CornerFixingPlateFlangeWidthInPlaneZ": {
                "description": "The flange width of the L-shaped corner plate in plane Z."
            },
            "CornerFixingPlateLength": {
                "description": "The length of the L-shaped corner plate."
            },
            "CornerFixingPlateThickness": {
                "description": "The thickness of the L-shaped corner plate."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedcomponentelements/pset/pset_discreteaccessorycornerfixingplate.htm"
    },
    "Pset_DiscreteAccessoryDiagonalTrussConnector": {
        "properties": {
            "DiagonalTrussBaseBarDiameter": {
                "description": "The nominal diameter of the base bar."
            },
            "DiagonalTrussCrossBarDiameter": {
                "description": "The nominal diameter of the diagonal cross-bars."
            },
            "DiagonalTrussCrossBarSpacing": {
                "description": "The spacing between diagonal cross-bar sections."
            },
            "DiagonalTrussHeight": {
                "description": "The overall height of the truss connector."
            },
            "DiagonalTrussLength": {
                "description": "The overall length of the truss connector."
            },
            "DiagonalTrussSecondaryBarDiameter": {
                "description": "The nominal diameter of the secondary bar."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedcomponentelements/pset/pset_discreteaccessorydiagonaltrussconnector.htm"
    },
    "Pset_DiscreteAccessoryEdgeFixingPlate": {
        "properties": {
            "EdgeFixingPlateFlangeWidthInPlaneX": {
                "description": "The flange width of the L-shaped edge plate in plane X."
            },
            "EdgeFixingPlateFlangeWidthInPlaneZ": {
                "description": "The flange width of the L-shaped edge plate in plane Z."
            },
            "EdgeFixingPlateLength": {
                "description": "The length of the L-shaped edge plate."
            },
            "EdgeFixingPlateThickness": {
                "description": "The thickness of the L-shaped edge plate."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedcomponentelements/pset/pset_discreteaccessoryedgefixingplate.htm"
    },
    "Pset_DiscreteAccessoryFixingSocket": {
        "properties": {
            "FixingSocketHeight": {
                "description": "The overall height of the fixing socket."
            },
            "FixingSocketThreadDiameter": {
                "description": "The nominal diameter of the thread."
            },
            "FixingSocketThreadLength": {
                "description": "The length of the threaded part of the fixing socket."
            },
            "FixingSocketTypeReference": {
                "description": "Type reference for the fixing socket according to local standards."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedcomponentelements/pset/pset_discreteaccessoryfixingsocket.htm"
    },
    "Pset_DiscreteAccessoryLadderTrussConnector": {
        "properties": {
            "LadderTrussBaseBarDiameter": {
                "description": "The nominal diameter of the base bar."
            },
            "LadderTrussCrossBarDiameter": {
                "description": "The nominal diameter of the straight cross-bars."
            },
            "LadderTrussCrossBarSpacing": {
                "description": "The spacing between the straight cross-bars."
            },
            "LadderTrussHeight": {
                "description": "The overall height of the truss connector."
            },
            "LadderTrussLength": {
                "description": "The overall length of the truss connector."
            },
            "LadderTrussSecondaryBarDiameter": {
                "description": "The nominal diameter of the secondary bar."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedcomponentelements/pset/pset_discreteaccessoryladdertrussconnector.htm"
    },
    "Pset_DiscreteAccessoryStandardFixingPlate": {
        "properties": {
            "StandardFixingPlateDepth": {
                "description": "The depth of the standard fixing plate."
            },
            "StandardFixingPlateThickness": {
                "description": "The thickness of the standard fixing plate."
            },
            "StandardFixingPlateWidth": {
                "description": "The width of the standard fixing plate."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedcomponentelements/pset/pset_discreteaccessorystandardfixingplate.htm"
    },
    "Pset_DiscreteAccessoryWireLoop": {
        "properties": {
            "WireDiameter": {
                "description": "The nominal diameter of the wire."
            },
            "WireEmbeddingLength": {
                "description": "The length of the part of wire which is embedded in the precast concrete element."
            },
            "WireLoopBasePlateLength": {
                "description": "The length of the base plate."
            },
            "WireLoopBasePlateThickness": {
                "description": "The thickness of the base plate."
            },
            "WireLoopBasePlateWidth": {
                "description": "The width of the base plate."
            },
            "WireLoopLength": {
                "description": "The length of the fastening loop part of the wire."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedcomponentelements/pset/pset_discreteaccessorywireloop.htm"
    },
    "Pset_DistributionChamberElementCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specific instance (e.g.  'WWS/VS1/400/001', which indicates the occurrence belongs to system WWS, subsystems VSI/400, and has the component number 001)."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionchamberelementcommon.htm"
    },
    "Pset_DistributionChamberElementTypeFormedDuct": {
        "properties": {
            "AccessCoverLoadRating": {
                "description": "The load rating of the access cover (which may be a value or an alphanumerically defined class rating)."
            },
            "BaseThickness": {
                "description": "The thickness of the duct base construction NOTE: It is assumed that duct base will be constructed at a single thickness."
            },
            "ClearDepth": {
                "description": "The depth of the formed space in the duct."
            },
            "ClearWidth": {
                "description": "The width of the formed space in the duct."
            },
            "WallThickness": {
                "description": "The thickness of the duct wall construction NOTE: It is assumed that chamber walls will be constructed at a single thickness."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionchamberelementtypeformedduct.htm"
    },
    "Pset_DistributionChamberElementTypeInspectionChamber": {
        "properties": {
            "AccessCoverLoadRating": {
                "description": "The load rating of the access cover (which may be a value or an alphanumerically defined class rating)."
            },
            "AccessCoverMaterial": {
                "description": "The material from which the access cover to the chamber is constructed. NOTE: It is assumed that chamber walls will be constructed of a single material."
            },
            "AccessLengthOrRadius": {
                "description": "The length of the chamber access cover or, where the plan shape of the cover is circular, the radius."
            },
            "AccessWidth": {
                "description": "The width of the chamber access cover where the plan shape of the cover is not circular."
            },
            "BaseMaterial": {
                "description": "The material from which the base of the chamber is constructed. NOTE: It is assumed that chamber base will be constructed of a single material."
            },
            "BaseThickness": {
                "description": "The thickness of the chamber base construction NOTE: It is assumed that chamber base will be constructed at a single thickness."
            },
            "ChamberLengthOrRadius": {
                "description": "Length or, in the event of the shape being circular in plan, the radius of the chamber."
            },
            "ChamberWidth": {
                "description": "Width, in the event of the shape being non circular in plan."
            },
            "InvertLevel": {
                "description": "Level of the lowest part of the cross section as measured from ground level."
            },
            "SoffitLevel": {
                "description": "Level of the highest internal part of the cross section as measured from ground level."
            },
            "WallMaterial": {
                "description": "The material from which the wall of the chamber is constructed. NOTE: It is assumed that chamber walls will be constructed of a single material."
            },
            "WallThickness": {
                "description": "The thickness of the chamber wall construction NOTE: It is assumed that chamber walls will be constructed at a single thickness."
            },
            "WithBackdrop": {
                "description": "Indicates whether the chamber has a backdrop or tumbling bay (TRUE) or not (FALSE)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionchamberelementtypeinspectionchamber.htm"
    },
    "Pset_DistributionChamberElementTypeInspectionPit": {
        "properties": {
            "Depth": {
                "description": "The depth of the pit."
            },
            "Length": {
                "description": "The length of the pit."
            },
            "Width": {
                "description": "The width of the pit."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionchamberelementtypeinspectionpit.htm"
    },
    "Pset_DistributionChamberElementTypeManhole": {
        "properties": {
            "AccessCoverLoadRating": {
                "description": "The load rating of the access cover (which may be a value or an alphanumerically defined class rating)."
            },
            "AccessCoverMaterial": {
                "description": "The material from which the access cover to the chamber is constructed. NOTE: It is assumed that chamber walls will be constructed of a single material."
            },
            "AccessLengthOrRadius": {
                "description": "The length of the chamber access cover or, where the plan shape of the cover is circular, the radius."
            },
            "AccessWidth": {
                "description": "The width of the chamber access cover where the plan shape of the cover is not circular."
            },
            "BaseMaterial": {
                "description": "The material from which the base of the chamber is constructed. NOTE: It is assumed that chamber base will be constructed of a single material."
            },
            "BaseThickness": {
                "description": "The thickness of the chamber base construction NOTE: It is assumed that chamber base will be constructed at a single thickness."
            },
            "HasSteps": {
                "description": "Indicates whether the chamber has steps (TRUE) or not (FALSE)."
            },
            "InvertLevel": {
                "description": "Level of the lowest part of the cross section as measured from ground level."
            },
            "IsShallow": {
                "description": "Indicates whether the chamber has been designed as being shallow (TRUE) or deep (FALSE)."
            },
            "SoffitLevel": {
                "description": "Level of the highest internal part of the cross section as measured from ground level."
            },
            "WallMaterial": {
                "description": "The material from which the wall of the chamber is constructed. NOTE: It is assumed that chamber walls will be constructed of a single material."
            },
            "WallThickness": {
                "description": "The thickness of the chamber wall construction NOTE: It is assumed that chamber walls will be constructed at a single thickness."
            },
            "WithBackdrop": {
                "description": "Indicates whether the chamber has a backdrop or tumbling bay (TRUE) or not (FALSE)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionchamberelementtypemanhole.htm"
    },
    "Pset_DistributionChamberElementTypeMeterChamber": {
        "properties": {
            "AccessCoverMaterial": {
                "description": "The material from which the access cover to the chamber is constructed. NOTE: It is assumed that chamber walls will be constructed of a single material."
            },
            "BaseMaterial": {
                "description": "The material from which the base of the chamber is constructed. NOTE: It is assumed that chamber base will be constructed of a single material."
            },
            "BaseThickness": {
                "description": "The thickness of the chamber base construction. NOTE: It is assumed that chamber base will be constructed at a single thickness."
            },
            "ChamberLengthOrRadius": {
                "description": "Length or, in the event of the shape being circular in plan, the radius of the chamber."
            },
            "ChamberWidth": {
                "description": "Width, in the event of the shape being non circular in plan."
            },
            "WallMaterial": {
                "description": "The material from which the wall of the chamber is constructed. NOTE: It is assumed that chamber walls will be constructed of a single material."
            },
            "WallThickness": {
                "description": "The thickness of the chamber wall construction . NOTE: It is assumed that chamber walls will be constructed at a single thickness."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionchamberelementtypemeterchamber.htm"
    },
    "Pset_DistributionChamberElementTypeSump": {
        "properties": {
            "InvertLevel": {
                "description": "The lowest point in the cross section of the sump."
            },
            "Length": {
                "description": "The length of the sump."
            },
            "Width": {
                "description": "The width of the sump."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionchamberelementtypesump.htm"
    },
    "Pset_DistributionChamberElementTypeTrench": {
        "properties": {
            "Depth": {
                "description": "The depth of the trench."
            },
            "InvertLevel": {
                "description": "Level of the lowest part of the cross section as measured from ground level."
            },
            "Width": {
                "description": "The width of the trench."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionchamberelementtypetrench.htm"
    },
    "Pset_DistributionChamberElementTypeValveChamber": {
        "properties": {
            "AccessCoverMaterial": {
                "description": "The material from which the access cover to the chamber is constructed. NOTE: It is assumed that chamber walls will be constructed of a single material."
            },
            "BaseMaterial": {
                "description": "The material from which the base of the chamber is constructed. NOTE: It is assumed that chamber base will be constructed of a single material."
            },
            "BaseThickness": {
                "description": "The thickness of the chamber base construction. NOTE: It is assumed that chamber base will be constructed at a single thickness."
            },
            "ChamberLengthOrRadius": {
                "description": "Length or, in the event of the shape being circular in plan, the radius of the chamber."
            },
            "ChamberWidth": {
                "description": "Width, in the event of the shape being non circular in plan."
            },
            "WallMaterial": {
                "description": "The material from which the wall of the chamber is constructed. NOTE: It is assumed that chamber walls will be constructed of a single material."
            },
            "WallThickness": {
                "description": "The thickness of the chamber wall construction. NOTE: It is assumed that chamber walls will be constructed at a single thickness."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionchamberelementtypevalvechamber.htm"
    },
    "Pset_DistributionPortCommon": {
        "properties": {
            "ColorCode": {
                "description": "Name of a color for identifying the connector, if applicable."
            },
            "PortNumber": {
                "description": "The port index for logically ordering the port within the containing element or element type."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionportcommon.htm"
    },
    "Pset_DistributionPortPHistoryCable": {
        "properties": {
            "ApparentPower": {
                "description": "Apparent power."
            },
            "Current": {
                "description": "Log of electrical current."
            },
            "DataReceived": {
                "description": "For data ports, captures log of data received.  The LIST at IfcTimeSeriesValue.Values may split out data according to Pset_DistributionPortTypeCable.Protocols."
            },
            "DataTransmitted": {
                "description": "For data ports, captures log of data transmitted.  The LIST at IfcTimeSeriesValue.Values may split out data according to Pset_DistributionPortTypeCable.Protocols."
            },
            "PowerFactor": {
                "description": "Power factor."
            },
            "ReactivePower": {
                "description": "Reactive power."
            },
            "RealPower": {
                "description": "Real power."
            },
            "Voltage": {
                "description": "Log of electrical voltage."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionportphistorycable.htm"
    },
    "Pset_DistributionPortPHistoryDuct": {
        "properties": {
            "FlowCondition": {
                "description": "Defines the flow condition as a percentage of the cross-sectional area."
            },
            "MassFlowRate": {
                "description": "The mass flow rate of the fluid."
            },
            "Pressure": {
                "description": "The pressure of the fluid."
            },
            "Temperature": {
                "description": "Temperature of the fluid. For air this value represents the dry bulb temperature."
            },
            "Velocity": {
                "description": "The velocity of the fluid."
            },
            "VolumetricFlowRate": {
                "description": "The volumetric flow rate of the fluid."
            },
            "WetBulbTemperature": {
                "description": "Wet bulb temperature of the fluid; only applicable if the fluid is air."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionportphistoryduct.htm"
    },
    "Pset_DistributionPortPHistoryPipe": {
        "properties": {
            "Flowrate": {
                "description": "The flowrate of the fuel."
            },
            "Pressure": {
                "description": "The pressure of the fuel."
            },
            "Temperature": {
                "description": "The temperature of the fuel."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionportphistorypipe.htm"
    },
    "Pset_DistributionPortTypeCable": {
        "properties": {
            "ConductorFunction": {
                "description": "For ports distributing power, indicates function of the conductors to which the load is connected."
            },
            "ConnectionGender": {
                "description": "The physical connection gender."
            },
            "ConnectionSubtype": {
                "description": "The physical port connection subtype that further qualifies the ConnectionType. The following values are recommended:"
            },
            "ConnectionType": {
                "description": "The physical port connection:"
            },
            "Current": {
                "description": "The actual current and operable range."
            },
            "CurrentContent3rdHarmonic": {
                "description": "The ratio between the third harmonic current and the phase current."
            },
            "Power": {
                "description": "The actual power and operable range."
            },
            "Protocols": {
                "description": "For data ports, identifies the protocols used as defined by the Open System Interconnection (OSI) Basic Reference Model (ISO 7498).  Layers include: 1. Physical; 2. DataLink; 3. Network; 4. Transport; 5. Session; 6. Presentation; 7. Application.  Example: 3:IP, 4:TCP, 5:HTTP"
            },
            "Voltage": {
                "description": "The actual voltage and operable range."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionporttypecable.htm"
    },
    "Pset_DistributionPortTypeDuct": {
        "properties": {
            "ConnectionSubType": {
                "description": "The physical port connection subtype that further qualifies the ConnectionType."
            },
            "ConnectionType": {
                "description": "The end-style treatment of the duct port:"
            },
            "DryBulbTemperature": {
                "description": "Dry bulb temperature of the air."
            },
            "NominalHeight": {
                "description": "The nominal height of the duct connection. Only provided for rectangular shaped ducts."
            },
            "NominalThickness": {
                "description": "The nominal wall thickness of the duct at the connection point."
            },
            "NominalWidth": {
                "description": "The nominal width or diameter of the duct connection."
            },
            "Pressure": {
                "description": "The pressure of the fluid."
            },
            "Velocity": {
                "description": "The velocity of the fluid."
            },
            "VolumetricFlowRate": {
                "description": "The volumetric flow rate of the fluid."
            },
            "WetBulbTemperature": {
                "description": "Wet bulb temperature of the air."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionporttypeduct.htm"
    },
    "Pset_DistributionPortTypePipe": {
        "properties": {
            "ConnectionSubType": {
                "description": "The physical port connection subtype that further qualifies the ConnectionType."
            },
            "ConnectionType": {
                "description": "The end-style treatment of the pipe port:"
            },
            "FlowCondition": {
                "description": "Defines the flow condition as a percentage of the cross-sectional area."
            },
            "InnerDiameter": {
                "description": "The actual inner diameter of the pipe."
            },
            "MassFlowRate": {
                "description": "The mass flow rate of the fluid."
            },
            "NominalDiameter": {
                "description": "The nominal diameter of the pipe connection."
            },
            "OuterDiameter": {
                "description": "The actual outer diameter of the pipe."
            },
            "Pressure": {
                "description": "The pressure of the fluid."
            },
            "Temperature": {
                "description": "Temperature of the fluid."
            },
            "Velocity": {
                "description": "The velocity of the fluid."
            },
            "VolumetricFlowRate": {
                "description": "The volumetric flow rate of the fluid."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionporttypepipe.htm"
    },
    "Pset_DistributionSystemCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specific instance of a distribution system, or sub-system (e.g. 'WWS/VS1', which indicates the system to be WWS, subsystems VSI/400). The reference values depend on the local code of practice."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionsystemcommon.htm"
    },
    "Pset_DistributionSystemTypeElectrical": {
        "properties": {
            "Diversity": {
                "description": "The ratio, expressed as a numerical value or as a percentage, of the simultaneous maximum demand of a group of electrical appliances or consumers within a specified period, to the sum of their individual maximum demands within the same period. The group of electrical appliances is in this case connected to this circuit. Defenition from IEC 60050, IEV 691-10-04  NOTE1: It is often not desirable to size each conductor in a distribution system to support the total connected load at that point in the network. Diversity is applied on the basis of the anticipated loadings that are likely to result from all loads not being connected at the same time. NOTE2: Diversity is applied to final circuits only, not to sub-main circuits supplying other DBs."
            },
            "ElectricalSystemCategory": {
                "description": "Designates the voltage range of the circuit, according to IEC.  HIGHVOLTAGE indicates >1000V AC or >1500V DV; LOWVOLTAGE indicates 50-1000V AC or 120-1500V DC; EXTRALOWVOLTAGE indicates <50V AC or <120V DC."
            },
            "ElectricalSystemType": {
                "description": "For certain purposes of electrical regulations, IEC 60364 defines types of system using type identifiers. Assignment of identifiers depends upon the relationship of the source, and of exposed conductive parts of the installation, to Ground (Earth).   Identifiers that may be assigned through IEC 60364 are: "
            },
            "MaximumAllowedVoltageDrop": {
                "description": "The maximum voltage drop across the circuit that must not be exceeded.  There are two  voltage drop limit settings that may be applied; one for sub-main circuits, and one in each Distribution Board or Consumer Unit for final circuits connected to that board. The settings should limit the overall voltage drop to the required level. Default settings of 1.5% for sub-main circuits and 2.5% for final circuits, giving an overall limit of 4% may be applied. NOTE: This value may also be specified as a constraint within an IFC model if required but is included within the property set at this stage pending implementation of the required capabilities within software applications."
            },
            "NetImpedance": {
                "description": "The maximum earth loop impedance upstream of a circuit (typically stated as the variable Zs). This value is for 55o C (130oF) Celsius usage."
            },
            "NumberOfLiveConductors": {
                "description": "Number of live conductors within this circuit. Either this property or the ConductorFunction property (if only one) may be asserted."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionsystemtypeelectrical.htm"
    },
    "Pset_DistributionSystemTypeVentilation": {
        "properties": {
            "AspectRatio": {
                "description": "The default aspect ratio."
            },
            "DesignName": {
                "description": "A name for the design values."
            },
            "DuctSealant": {
                "description": "Type of sealant used on the duct and fittings."
            },
            "DuctSizingMethod": {
                "description": "Enumeration that identifies the methodology to be used to size system components."
            },
            "FrictionLoss": {
                "description": "The pressure loss due to friction per unit length. (Data type = PressureMeasure/LengthMeasure)"
            },
            "LeakageClass": {
                "description": "Nominal leakage rating for the system components."
            },
            "MaximumVelocity": {
                "description": "The maximum design velocity of the air in the duct or fitting."
            },
            "MinimumHeight": {
                "description": "The minimum duct height for rectangular, oval or round duct."
            },
            "MinimumWidth": {
                "description": "The minimum duct width for oval or rectangular duct."
            },
            "PressureClass": {
                "description": "Nominal pressure rating of the system components. (Data type = PressureMeasure)"
            },
            "ScrapFactor": {
                "description": "Sheet metal scrap factor."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_distributionsystemtypeventilation.htm"
    },
    "Pset_DoorCommon": {
        "properties": {
            "AcousticRating": {
                "description": "Acoustic rating for this object. It is provided according to the national building code. It indicates the sound transmission resistance of this object by an index ratio (instead of providing full sound absorbtion values)."
            },
            "DurabilityRating": {
                "description": "Durability against mechanical stress. It is given according to the national code or regulation."
            },
            "FireExit": {
                "description": "Indication whether this object is designed to serve as an exit in the case of fire (TRUE) or not (FALSE). Here it defines an exit door in accordance to the national building code."
            },
            "FireRating": {
                "description": "Fire rating for this object. It is given according to the national fire safety code or regulation."
            },
            "GlazingAreaFraction": {
                "description": "Fraction of the glazing area relative to the total area of the filling element.  It shall be used, if the glazing area is not given separately for all panels within the filling element."
            },
            "HandicapAccessible": {
                "description": "Indication that this object is designed to be accessible by the handicapped.  It is giving according to the requirements of the national building code."
            },
            "HasDrive": {
                "description": "Indication whether this object has an automatic drive to operate it (TRUE) or no drive (FALSE)"
            },
            "HygrothermalRating": {
                "description": "Resistence against hygrothermal impact from different temperatures and humidities inside and outside. It is given according to the national code or regulation."
            },
            "Infiltration": {
                "description": "Infiltration flowrate of outside air for the filler object based on the area of the filler object at a pressure level of 50 Pascals. It shall be used, if the length of all joints is unknown."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "MechanicalLoadRating": {
                "description": "Mechanical load rating for this object. It is provided according to the national building code."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "SecurityRating": {
                "description": "Index based rating system indicating security level. It is giving according to the national building code."
            },
            "SelfClosing": {
                "description": "Indication whether this object is designed to close automatically after use (TRUE) or not (FALSE)."
            },
            "SmokeStop": {
                "description": "Indication whether the object is designed to provide a smoke stop (TRUE) or not (FALSE)."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of a material. It applies to the total door construction."
            },
            "WaterTightnessRating": {
                "description": "Water tightness rating for this object. It is provided according to the national building code."
            },
            "WindLoadRating": {
                "description": "Wind load resistance rating for this object. It is provided according to the national building code."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_doorcommon.htm"
    },
    "Pset_DoorWindowGlazingType": {
        "properties": {
            "FillGas": {
                "description": "Name of the gas by which the gap between two glass layers is filled. It is given for information purposes only."
            },
            "GlassColor": {
                "description": "Color (tint) selection for this glazing. It is given for information purposes only."
            },
            "GlassLayers": {
                "description": "Number of glass layers within the frame. E.g. \"2\" for double glazing."
            },
            "GlassThickness1": {
                "description": "Thickness of the first (inner) glass layer."
            },
            "GlassThickness2": {
                "description": "Thickness of the second (intermediate or outer) glass layer."
            },
            "GlassThickness3": {
                "description": "Thickness of the third (outer) glass layer."
            },
            "IsCoated": {
                "description": "Indication whether the glass is coated with a material (TRUE) or not (FALSE)."
            },
            "IsLaminated": {
                "description": "Indication whether the glass is layered with other materials (TRUE) or not (FALSE)."
            },
            "IsTempered": {
                "description": "Indication whether the glass is tempered (TRUE) or not (FALSE) ."
            },
            "IsWired": {
                "description": "Indication whether the glass includes a contained wire mesh to prevent break-in (TRUE) or not (FALSE)"
            },
            "ShadingCoefficient": {
                "description": "(SC): The measure of the ability of a glazing to transmit solar heat, relative to that ability for 3 mm (1/8-inch) clear, double-strength, single glass. Shading coefficient is being phased out in favor of the solar heat gain coefficient (SHGC), and is approximately equal to the SHGC multiplied by 1.15. The shading coefficient is expressed as a number without units between 0 and 1."
            },
            "SolarAbsorption": {
                "description": "(Asol) The ratio of incident solar radiation that is absorbed by a glazing system. It is the sum of the absorption distributed to the exterior (a) and to the interior (qi). Note the following equation Asol + Rsol + Tsol = 1"
            },
            "SolarHeatGainTransmittance": {
                "description": "(SHGC): The ratio of incident solar radiation that contributes to the heat gain of the interior, it is the solar radiation that directly passes (Tsol or \u03c4e) plus the part of the absorbed radiation that is distributed to the interior (qi). The SHGC is refered to also as g-value (g = \u03c4e + qi)."
            },
            "SolarReflectance": {
                "description": "(Rsol): The ratio of incident solar radiation that is reflected by a glazing system (also named \u03c1e). Note the following equation Asol + Rsol + Tsol = 1"
            },
            "SolarTransmittance": {
                "description": "(Tsol): The ratio of incident solar radiation that directly passes through a glazing system (also named \u03c4e). Note the following equation Asol + Rsol + Tsol = 1"
            },
            "ThermalTransmittanceSummer": {
                "description": "Thermal transmittance coefficient (U-Value) of a material. Summer thermal transmittance coefficient of the glazing only, often referred to as (U-value)."
            },
            "ThermalTransmittanceWinter": {
                "description": "Thermal transmittance coefficient (U-Value) of a material. Winter thermal transmittance coefficient of the glazing only, often referred to as (U-value)."
            },
            "VisibleLightReflectance": {
                "description": "Fraction of the visible light that is reflected by the glazing at normal incidence. It is a value without unit."
            },
            "VisibleLightTransmittance": {
                "description": "Fraction of the visible light that passes the glazing at normal incidence. It is a value without unit."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_doorwindowglazingtype.htm"
    },
    "Pset_DuctFittingOccurrence": {
        "properties": {
            "Color": {
                "description": "The color of the duct segment."
            },
            "HasLiner": {
                "description": "TRUE if the fitting has interior duct insulating lining, FALSE if it does not."
            },
            "InteriorRoughnessCoefficient": {
                "description": "The interior roughness of the duct fitting material."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_ductfittingoccurrence.htm"
    },
    "Pset_DuctFittingPHistory": {
        "properties": {
            "AirFlowLeakage": {
                "description": "Volumetric leakage flow rate."
            },
            "AtmosphericPressure": {
                "description": "Ambient atmospheric pressure."
            },
            "LossCoefficient": {
                "description": "Dimensionless loss coefficient used for calculating fluid resistance representing the ratio of total pressure loss to velocity pressure at a referenced cross-section."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_ductfittingphistory.htm"
    },
    "Pset_DuctFittingTypeCommon": {
        "properties": {
            "PressureClass": {
                "description": "Pressure classification as defined by the authority having jurisdiction (e.g., SMACNA, etc.)."
            },
            "PressureRange": {
                "description": "Allowable maximum and minimum working pressure (relative to ambient pressure)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "TemperatureRange": {
                "description": "Allowable maximum and minimum temperature."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_ductfittingtypecommon.htm"
    },
    "Pset_DuctSegmentOccurrence": {
        "properties": {
            "Color": {
                "description": "The color of the duct segment."
            },
            "HasLiner": {
                "description": "TRUE if the fitting has interior duct insulating lining, FALSE if it does not."
            },
            "InteriorRoughnessCoefficient": {
                "description": "The interior roughness of the duct fitting material."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_ductsegmentoccurrence.htm"
    },
    "Pset_DuctSegmentPHistory": {
        "properties": {
            "AtmosphericPressure": {
                "description": "Ambient atmospheric pressure."
            },
            "FluidFlowLeakage": {
                "description": "Volumetric leakage flow rate."
            },
            "LeakageCurve": {
                "description": "Leakage per unit length curve versus working pressure. If a scalar is expressed then it represents LeakageClass which is flowrate per unit area at a specified pressure rating (e.g., ASHRAE Fundamentals 2001 34.16.)."
            },
            "LossCoefficient": {
                "description": "Dimensionless loss coefficient used for calculating fluid resistance representing the ratio of total pressure loss to velocity pressure at a referenced cross-section."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_ductsegmentphistory.htm"
    },
    "Pset_DuctSegmentTypeCommon": {
        "properties": {
            "LongitudinalSeam": {
                "description": "The type of seam to be used along the longitudinal axis of the duct segment."
            },
            "NominalDiameterOrWidth": {
                "description": "The nominal diameter or width of the duct segment."
            },
            "NominalHeight": {
                "description": "The nominal height of the duct segment."
            },
            "PressureRange": {
                "description": "Allowable maximum and minimum working pressure (relative to ambient pressure)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Reinforcement": {
                "description": "The type of reinforcement, if any, used for the duct segment."
            },
            "ReinforcementSpacing": {
                "description": "The spacing between reinforcing elements."
            },
            "Shape": {
                "description": "Cross sectional shape. Note that this shape is uniform throughout the length of the segment. For nonuniform shapes, a transition fitting should be used instead."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "TemperatureRange": {
                "description": "Allowable maximum and minimum temperature."
            },
            "WorkingPressure": {
                "description": "Pressure classification as defined by the authority having jurisdiction (e.g., SMACNA, etc.)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_ductsegmenttypecommon.htm"
    },
    "Pset_DuctSilencerPHistory": {
        "properties": {
            "AirFlowRate": {
                "description": "Volumetric air flow rate."
            },
            "AirPressureDropCurve": {
                "description": "Air pressure drop as a function of air flow rate."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_ductsilencerphistory.htm"
    },
    "Pset_DuctSilencerTypeCommon": {
        "properties": {
            "AirFlowrateRange": {
                "description": "Possible range of airflow that can be delivered."
            },
            "HasExteriorInsulation": {
                "description": "TRUE if the silencer has exterior insulation. FALSE if it does not."
            },
            "HydraulicDiameter": {
                "description": "Hydraulic diameter."
            },
            "Length": {
                "description": "The finished length of the silencer."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "TemperatureRange": {
                "description": "Allowable minimum and maximum temperature."
            },
            "Weight": {
                "description": "The weight of the silencer."
            },
            "WorkingPressureRange": {
                "description": "Allowable minimum and maximum  working pressure (relative to ambient pressure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_ductsilencertypecommon.htm"
    },
    "Pset_ElectricAppliancePHistory": {
        "properties": {
            "PowerState": {
                "description": "Indicates the power state of the device where True is on and False is off."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_electricappliancephistory.htm"
    },
    "Pset_ElectricApplianceTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_electricappliancetypecommon.htm"
    },
    "Pset_ElectricApplianceTypeDishwasher": {
        "properties": {
            "DishwasherType": {
                "description": "Type of dishwasher."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_electricappliancetypedishwasher.htm"
    },
    "Pset_ElectricApplianceTypeElectricCooker": {
        "properties": {
            "ElectricCookerType": {
                "description": "Type of electric cooker."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_electricappliancetypeelectriccooker.htm"
    },
    "Pset_ElectricDistributionBoardOccurrence": {
        "properties": {
            "IsMain": {
                "description": "Identifies if the current instance is a main distribution point or topmost level in an electrical distribution hierarchy (= TRUE) or a sub-main distribution point (= FALSE)."
            },
            "IsSkilledOperator": {
                "description": "Identifies if the current instance requires a skilled person or instructed person to perform operations on the distribution board (= TRUE) or whether operations may be performed by a person without appropriate skills or instruction (= FALSE)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_electricdistributionboardoccurrence.htm"
    },
    "Pset_ElectricDistributionBoardTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_electricdistributionboardtypecommon.htm"
    },
    "Pset_ElectricFlowStorageDevicePHistory": {
        "properties": {
            "Level": {
                "description": "The fraction of usable energy stored."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_electricflowstoragedevicephistory.htm"
    },
    "Pset_ElectricFlowStorageDeviceTypeCommon": {
        "properties": {
            "ConnectedConductorFunction": {
                "description": "Function of the conductors to which the load is connected."
            },
            "EarthFault1PoleMaximumState": {
                "description": "Maximum 1 pole earth fault current provided at the point of supply i.e. the fault between 1 phase and PE/PEN."
            },
            "EarthFault1PoleMinimumState": {
                "description": "Minimum 1 pole earth fault current provided at the point of supply i.e. the fault between 1 phase and PE/PEN."
            },
            "EarthFault1PolePowerFactorMaximumState": {
                "description": "Power factor of the maximum 1 pole earth fault  current provided at the point of supply i.e. the fault between 1 phase and PE/PEN."
            },
            "EarthFault1PolePowerFactorMinimumState": {
                "description": "Power factor of the minimum 1 pole earth fault current provided at the point of supply i.e. the fault between 1 phase and PE/PEN."
            },
            "ModuleCapacity": {
                "description": "The capacity for each battery module."
            },
            "ModulesInParallel": {
                "description": "The number of modules in parallel, where the total number of modules equals the number in parallel multiplied by the number in series."
            },
            "ModulesInSeries": {
                "description": "The number of modules in series, where the total number of modules equals the number in parallel multiplied by the number in series."
            },
            "NominalFrequency": {
                "description": "The nominal frequency of the supply."
            },
            "NominalSupplyVoltage": {
                "description": "The nominal voltage of the supply."
            },
            "NominalSupplyVoltageOffset": {
                "description": "The maximum and minimum allowed voltage of the supply e.g. boundaries of 380V/440V may be applied for a nominal voltage of 400V."
            },
            "RadiativeFraction": {
                "description": "The fraction of energy converted to heat."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "ShortCircuit1PoleMaximumState": {
                "description": "Maximum 1 pole short circuit current provided at the point of supply i.e. the fault between 1 phase and N."
            },
            "ShortCircuit1PoleMinimumState": {
                "description": "Minimum 1 pole short circuit current provided at the point of supply i.e. the fault between 1 phase and N."
            },
            "ShortCircuit1PolePowerFactorMaximumState": {
                "description": "Power factor of the maximum 1 pole short circuit current provided at the point of supply i.e. the fault between 1 phase and N."
            },
            "ShortCircuit1PolePowerFactorMinimumState": {
                "description": "Power factor of the minimum 1 pole short circuit current provided at the point of supply i.e. the fault between 1 phase and N."
            },
            "ShortCircuit2PoleMinimumState": {
                "description": "Minimum 2 pole short circuit current provided at the point of supply."
            },
            "ShortCircuit2PolePowerFactorMinimumState": {
                "description": "Power factor of the minimum 2 pole short circuit current provided at the point of supply."
            },
            "ShortCircuit3PoleMaximumState": {
                "description": "Maximum 3 pole short circuit current provided at the point of supply."
            },
            "ShortCircuit3PolePowerFactorMaximumState": {
                "description": "Power factor of the maximum 3 pole short circuit current provided at the point of supply."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_electricflowstoragedevicetypecommon.htm"
    },
    "Pset_ElectricGeneratorTypeCommon": {
        "properties": {
            "ElectricGeneratorEfficiency": {
                "description": "The ratio of output capacity to intake capacity."
            },
            "MaximumPowerOutput": {
                "description": "The maximum output power rating of the engine."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "StartCurrentFactor": {
                "description": "IEC. Start current factor defines how large the peek starting current will become on the engine. StartCurrentFactor is multiplied to NominalCurrent and we get the start current."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_electricgeneratortypecommon.htm"
    },
    "Pset_ElectricMotorTypeCommon": {
        "properties": {
            "ElectricMotorEfficiency": {
                "description": "The ratio of output capacity to intake capacity."
            },
            "FrameSize": {
                "description": "Designation of the frame size according to the named range of frame sizes designated at the place of use or according to a given standard."
            },
            "HasPartWinding": {
                "description": "Indication of whether the motor is single speed, i.e. has a single winding (= FALSE) or multi-speed i.e.has part winding (= TRUE) ."
            },
            "IsGuarded": {
                "description": "Indication of whether the motor enclosure is guarded (= TRUE) or not (= FALSE)."
            },
            "LockedRotorCurrent": {
                "description": "Input current when a motor armature is energized but not rotating."
            },
            "MaximumPowerOutput": {
                "description": "The maximum output power rating of the engine."
            },
            "MotorEnclosureType": {
                "description": "A list of the available types of motor enclosure from which that required may be selected."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "StartCurrentFactor": {
                "description": "IEC. Start current factor defines how large the peak starting current will become on the engine. StartCurrentFactor is multiplied to NominalCurrent and to give the start current."
            },
            "StartingTime": {
                "description": "The time (in s) needed for the motor to reach its rated speed with its driven equipment attached, starting from standstill and at the nominal voltage applied at its terminals."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "TeTime": {
                "description": "The maximum time (in s) at which the motor could run with locked rotor when the motor is used in an EX-environment. The time indicates that a protective device should trip before this time when the starting current of the motor is slowing through the device."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_electricmotortypecommon.htm"
    },
    "Pset_ElectricTimeControlTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_electrictimecontroltypecommon.htm"
    },
    "Pset_ElectricalDeviceCommon": {
        "properties": {
            "ConductorFunction": {
                "description": "Function of a line conductor to which a device  is intended to be connected where L1, L2 and L3 represent the phase lines according to IEC 60446 notation (sometimes phase lines may be referenced by color [Red, Blue, Yellow] or by number [1, 2, 3] etc). Protective Earth is sometimes also known as CPC or common protective conductor. Note that for an electrical device, a set of line conductor functions may be applied."
            },
            "HasProtectiveEarth": {
                "description": "Indicates whether the electrical device has a protective earth connection (=TRUE) or not (= FALSE)."
            },
            "IK_Code": {
                "description": "IK Code according to IEC 62262 (2002) is a numeric classification for the degree of protection provided by enclosures for electrical equipment against external mechanical impacts."
            },
            "IP_Code": {
                "description": "IP Code, the International Protection Marking, IEC 60529), classifies and rates the degree of protection provided against intrusion."
            },
            "InsulationStandardClass": {
                "description": "Insulation standard classes provides basic protection information against electric shock. Defines levels of insulation required in terms of constructional requirements (creepage and clearance distances) and electrical requirements (compliance with electric strength tests). Basic insulation is considered to be shorted under single fault conditions. The actual values required depend on the working voltage to which the insulation is subjected, as well as other factors. Also indicates whether the electrical device has a protective earth connection."
            },
            "NominalFrequencyRange": {
                "description": "The upper and lower limits of frequency for which the operation of the device is certified."
            },
            "NumberOfPoles": {
                "description": "The number of live lines that is intended to be handled by the device."
            },
            "PowerFactor": {
                "description": "The ratio between the rated electrical power and the product of the rated current and rated voltage"
            },
            "RatedCurrent": {
                "description": "The current that a device is designed to handle."
            },
            "RatedVoltage": {
                "description": "The voltage that a device is designed to handle."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_electricaldevicecommon.htm"
    },
    "Pset_ElementAssemblyCommon": {
        "properties": {
            "Reference": {},
            "Status": {}
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_elementassemblycommon.htm"
    },
    "Pset_ElementCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        }
    },
    "Pset_ElementComponentCommon": {
        "properties": {
            "CorrosionTreatment": {
                "description": "Determines corrosion treatment for metal components. This property is provided if the requirement needs to be expressed (a) independently of a material specification and (b) as a mere requirements statement rather than a workshop design/ processing feature."
            },
            "DeliveryType": {
                "description": "Determines how the accessory will be delivered to the site."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedcomponentelements/pset/pset_elementcomponentcommon.htm"
    },
    "Pset_EngineTypeCommon": {
        "properties": {
            "EnergySource": {
                "description": "The source of energy."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_enginetypecommon.htm"
    },
    "Pset_EnvironmentalImpactIndicators": {
        "properties": {
            "AtmosphericAcidificationPerUnit": {
                "description": "Quantity of gases responsible for the atmospheric acidification calculated in equivalent SO2"
            },
            "ClimateChangePerUnit": {
                "description": "Quantity of greenhouse gases emitted calculated in equivalent CO2"
            },
            "EutrophicationPerUnit": {
                "description": "Quantity of eutrophicating compounds calculated in equivalent PO4"
            },
            "ExpectedServiceLife": {
                "description": "Expected service life in years."
            },
            "FunctionalUnitReference": {
                "description": "Reference to a database or a classification"
            },
            "HazardousWastePerUnit": {
                "description": "Quantity of hazardous waste generated"
            },
            "InertWastePerUnit": {
                "description": "Quantity of inert waste generated"
            },
            "LifeCyclePhase": {
                "description": "The whole life cycle or only a given phase  from which environmental data are valid."
            },
            "NonHazardousWastePerUnit": {
                "description": "Quantity of non hazardous waste generated"
            },
            "NonRenewableEnergyConsumptionPerUnit": {
                "description": "Quantity of non-renewable energy used as defined in ISO21930:2007"
            },
            "PhotochemicalOzoneFormationPerUnit": {
                "description": "Quantity of gases creating the photochemical ozone calculated in equivalent ethylene"
            },
            "RadioactiveWastePerUnit": {
                "description": "Quantity of radioactive waste generated"
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project"
            },
            "RenewableEnergyConsumptionPerUnit": {
                "description": "Quantity of renewable energy used as defined in ISO21930:2007"
            },
            "ResourceDepletionPerUnit": {
                "description": "Quantity of resources used calculated in equivalent antimony"
            },
            "StratosphericOzoneLayerDestructionPerUnit": {
                "description": "Quantity of gases destroying the stratospheric ozone layer calculated in equivalent CFC-R11"
            },
            "TotalPrimaryEnergyConsumptionPerUnit": {
                "description": "Quantity of energy used as defined in ISO21930:2007."
            },
            "Unit": {
                "description": "The unit of the quantity the environmental indicators values are related with."
            },
            "WaterConsumptionPerUnit": {
                "description": "Quantity of water used."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_environmentalimpactindicators.htm"
    },
    "Pset_EnvironmentalImpactValues": {
        "properties": {
            "AtmosphericAcidification": {
                "description": "Quantity of gases responsible for the atmospheric acidification calculated in equivalent SO2."
            },
            "ClimateChange": {
                "description": "Quantity of greenhouse gases emitted calculated in equivalent CO2."
            },
            "Duration": {
                "description": "Duration of process."
            },
            "Eutrophication": {
                "description": "Quantity of eutrophicating compounds calculated in equivalent PO4."
            },
            "HazardousWaste": {
                "description": "Quantity of hazardous waste generated."
            },
            "InertWaste": {
                "description": "Quantity of inert waste generated ."
            },
            "LeadInTime": {
                "description": "Lead in time before start of process."
            },
            "LeadOutTime": {
                "description": "Lead out time after end of process."
            },
            "NonHazardousWaste": {
                "description": "Quantity of non hazardous waste generated."
            },
            "NonRenewableEnergyConsumption": {
                "description": "Quantity of non-renewable energy used as defined in ISO21930:2007"
            },
            "PhotochemicalOzoneFormation": {
                "description": "Quantity of gases creating the photochemical ozone calculated in equivalent ethylene."
            },
            "RadioactiveWaste": {
                "description": "Quantity of radioactive waste generated."
            },
            "RenewableEnergyConsumption": {
                "description": "Quantity of renewable energy used as defined in ISO21930:2007"
            },
            "ResourceDepletion": {
                "description": "Quantity of resources used calculated in equivalent antimony."
            },
            "StratosphericOzoneLayerDestruction": {
                "description": "Quantity of gases destroying the stratospheric ozone layer calculated in equivalent CFC-R11."
            },
            "TotalPrimaryEnergyConsumption": {
                "description": "Quantity of energy used as defined in ISO21930:2007."
            },
            "WaterConsumption": {
                "description": "Quantity of water used."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_environmentalimpactvalues.htm"
    },
    "Pset_EvaporativeCoolerPHistory": {
        "properties": {
            "Effectiveness": {
                "description": "Ratio of the change in dry bulb temperature of the (primary) air stream to the difference between the entering dry bulb temperature of the (primary) air and the wet-bulb temperature of the (secondary) air."
            },
            "LatentHeatTransferRate": {
                "description": "Latent heat transfer rate to primary air flow."
            },
            "SensibleHeatTransferRate": {
                "description": "Sensible heat transfer rate to primary air flow."
            },
            "TotalHeatTransferRate": {
                "description": "Total heat transfer rate to primary air flow."
            },
            "WaterSumpTemperature": {
                "description": "Water sump temperature."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_evaporativecoolerphistory.htm"
    },
    "Pset_EvaporativeCoolerTypeCommon": {
        "properties": {
            "AirPressureDropCurve": {
                "description": "Air pressure drop as function of air flow rate."
            },
            "EffectivenessTable": {
                "description": "Total heat transfer effectiveness curve as a function of the primary air flow rate."
            },
            "FlowArrangement": {
                "description": "CounterFlow: Air and water flow enter in different directions."
            },
            "HeatExchangeArea": {
                "description": "Heat exchange area."
            },
            "OperationTemperatureRange": {
                "description": "Allowable operation ambient air temperature range."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "WaterPressDropCurve": {
                "description": "Water pressure drop as function of water flow rate."
            },
            "WaterRequirement": {
                "description": "Make-up water requirement."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_evaporativecoolertypecommon.htm"
    },
    "Pset_EvaporatorPHistory": {
        "properties": {
            "CompressorEvaporatorHeatGain": {
                "description": "Heat gain between the evaporator outlet and the compressor inlet."
            },
            "CompressorEvaporatorPressureDrop": {
                "description": "Pressure drop between the evaporator outlet and the compressor inlet."
            },
            "EvaporatingTemperature": {
                "description": "Refrigerant evaporating temperature."
            },
            "EvaporatorMeanVoidFraction": {
                "description": "Mean void fraction in evaporator."
            },
            "ExteriorHeatTransferCoefficient": {
                "description": "Exterior heat transfer coefficient associated with exterior surface area."
            },
            "HeatRejectionRate": {
                "description": "Sum of the refrigeration effect and the heat equivalent of the power input to the compressor."
            },
            "InteriorHeatTransferCoefficient": {
                "description": "Interior heat transfer coefficient associated with interior surface area."
            },
            "LogarithmicMeanTemperatureDifference": {
                "description": "Logarithmic mean temperature difference between refrigerant and water or air."
            },
            "RefrigerantFoulingResistance": {
                "description": "Fouling resistance on the refrigerant side."
            },
            "UAcurves": {
                "description": "UV = f (VExterior, VInterior), UV as a function of interior and exterior fluid flow velocity at the entrance."
            },
            "WaterFoulingResistance": {
                "description": "Fouling resistance on water/air side."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_evaporatorphistory.htm"
    },
    "Pset_EvaporatorTypeCommon": {
        "properties": {
            "EvaporatorCoolant": {
                "description": "The fluid used for the coolant in the evaporator."
            },
            "EvaporatorMediumType": {
                "description": "ColdLiquid: Evaporator is using liquid type of fluid to exchange heat with refrigerant. ColdAir: Evaporator is using air to exchange heat with refrigerant."
            },
            "ExternalSurfaceArea": {
                "description": "External surface area (both primary and secondary area)."
            },
            "InternalRefrigerantVolume": {
                "description": "Internal volume of evaporator (refrigerant side)."
            },
            "InternalSurfaceArea": {
                "description": "Internal surface area."
            },
            "InternalWaterVolume": {
                "description": "Internal volume of evaporator (water side)."
            },
            "NominalHeatTransferArea": {
                "description": "Nominal heat transfer surface area associated with nominal overall heat transfer coefficient."
            },
            "NominalHeatTransferCoefficient": {
                "description": "Nominal overall heat transfer coefficient associated with nominal heat transfer area."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "RefrigerantClass": {
                "description": "Refrigerant class used by the compressor. CFC: Chlorofluorocarbons. HCFC: Hydrochlorofluorocarbons. HFC: Hydrofluorocarbons."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_evaporatortypecommon.htm"
    },
    "Pset_FanCentrifugal": {
        "properties": {
            "Arrangement": {
                "description": "Defines the fan and motor drive arrangement as defined by AMCA."
            },
            "DirectionOfRotation": {
                "description": "The direction of the centrifugal fan wheel rotation when viewed from the drive side of the fan."
            },
            "DischargePosition": {
                "description": "Centrifugal fan discharge position."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_fancentrifugal.htm"
    },
    "Pset_FanOccurrence": {
        "properties": {
            "ApplicationOfFan": {
                "description": "The functional application of the fan."
            },
            "CoilPosition": {
                "description": "Defines the relationship between a fan and a coil."
            },
            "DischargeType": {
                "description": "Defines the type of connection at the fan discharge."
            },
            "FanMountingType": {
                "description": "Defines the method of mounting the fan in the building."
            },
            "FractionOfMotorHeatToAirStream": {
                "description": "Fraction of the motor heat released into the fluid flow."
            },
            "ImpellerDiameter": {
                "description": "Diameter of fan wheel - used to scale performance of geometrically similar fans."
            },
            "MotorPosition": {
                "description": "Defines the location of the motor relative to the air stream."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_fanoccurrence.htm"
    },
    "Pset_FanPHistory": {
        "properties": {
            "DischargePressureLoss": {
                "description": "Fan discharge pressure loss associated with the discharge arrangement."
            },
            "DischargeVelocity": {
                "description": "The speed at which air discharges from the fan through the fan housing discharge opening."
            },
            "DrivePowerLoss": {
                "description": "Fan drive power losses associated with the type of connection between the motor and the fan wheel."
            },
            "FanEfficiency": {
                "description": "Fan mechanical efficiency."
            },
            "FanPowerRate": {
                "description": "Fan power consumption."
            },
            "FanRotationSpeed": {
                "description": "Fan rotation speed."
            },
            "OverallEfficiency": {
                "description": "Total efficiency of motor and fan."
            },
            "ShaftPowerRate": {
                "description": "Fan shaft power."
            },
            "WheelTipSpeed": {
                "description": "Fan blade tip speed, typically defined as the linear speed of the tip of the fan blade furthest from the shaft."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_fanphistory.htm"
    },
    "Pset_FanTypeCommon": {
        "properties": {
            "CapacityControlType": {
                "description": "InletVane: Control by adjusting inlet vane. VariableSpeedDrive: Control by variable speed drive.  BladePitchAngle: Control by adjusting blade pitch angle. TwoSpeed: Control by switch between high and low speed. DischargeDamper: Control by modulating discharge damper."
            },
            "EfficiencyCurve": {
                "description": "Fan efficiency =f (flow rate)."
            },
            "MotorDriveType": {
                "description": "Motor drive type: DIRECTDRIVE: Direct drive.  BELTDRIVE: Belt drive.  COUPLING: Coupling.  OTHER: Other type of motor drive.  UNKNOWN: Unknown motor drive type."
            },
            "NominalAirFlowRate": {
                "description": "Nominal air flow rate."
            },
            "NominalPowerRate": {
                "description": "Nominal fan power rate."
            },
            "NominalRotationSpeed": {
                "description": "Nominal fan wheel speed."
            },
            "NominalStaticPressure": {
                "description": "The static pressure within the air stream that the fan must overcome to insure designed circulation of air."
            },
            "NominalTotalPressure": {
                "description": "Nominal total pressure rise across the fan."
            },
            "OperationTemperatureRange": {
                "description": "Allowable operation ambient air temperature range."
            },
            "OperationalCriteria": {
                "description": "Time of operation at maximum operational ambient air temperature."
            },
            "PressureCurve": {
                "description": "Pressure rise = f (flow rate)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_fantypecommon.htm"
    },
    "Pset_FastenerWeld": {
        "properties": {
            "Intermittent": {
                "description": "If fillet weld, intermittent or not"
            },
            "Process": {
                "description": "Reference number of the welding process according to ISO 4063, an up to three digits long code"
            },
            "ProcessName": {
                "description": "Name of the welding process.  Alternative to the numeric Process property."
            },
            "Staggered": {
                "description": "If intermittent weld, staggered or not"
            },
            "Surface1": {
                "description": "Aspect of weld seam surface, i.e. 'plane', 'curved' or 'hollow'.  Combined welds are given by two corresponding symbols analogous to Type1 and Type2."
            },
            "Surface2": {
                "description": "See Surface1."
            },
            "Type1": {
                "description": "Type of weld seam according to ISO 2553.  Note, combined welds are given by two corresponding symbols in the direction of the normal axis of the coordinate system.  For example, an X weld is specified by Type1 = 'V' and Type2 = 'V'."
            },
            "Type2": {
                "description": "See Type1."
            },
            "a": {
                "description": "Measure a according to ISO 2553"
            },
            "c": {
                "description": "Measure c according to ISO 2553"
            },
            "d": {
                "description": "Measure d according to ISO 2553"
            },
            "e": {
                "description": "Measure e according to ISO 2553"
            },
            "l": {
                "description": "Measure l according to ISO 2553"
            },
            "n": {
                "description": "Count n according to ISO 2553"
            },
            "s": {
                "description": "Measure s according to ISO 2553"
            },
            "z": {
                "description": "Measure z according to ISO 2553"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedcomponentelements/pset/pset_fastenerweld.htm"
    },
    "Pset_FilterPHistory": {
        "properties": {
            "CountedEfficiency": {
                "description": "Filter efficiency based the particle counts concentration before and after filter against particles with certain size distribution."
            },
            "ParticleMassHolding": {
                "description": "Mass of particle holding in the filter."
            },
            "WeightedEfficiency": {
                "description": "Filter efficiency based the particle weight concentration before and after filter against particles with certain size distribution."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_filterphistory.htm"
    },
    "Pset_FilterTypeAirParticleFilter": {
        "properties": {
            "AirParticleFilterType": {
                "description": "A panel dry type extended surface filter is a dry-type air filter with random fiber mats or blankets in the forms of pockets, V-shaped or radial pleats, and include the following:"
            },
            "CountedEfficiencyCurve": {
                "description": "Counted efficiency curve as a function of dust holding weight, efficiency = f (dust holding weight)."
            },
            "DustHoldingCapacity": {
                "description": "Maximum filter dust holding capacity."
            },
            "FaceSurfaceArea": {
                "description": "Face area of filter frame."
            },
            "FrameMaterial": {
                "description": "Filter frame material."
            },
            "MediaExtendedArea": {
                "description": "Total extended media area."
            },
            "NominalCountedEfficiency": {
                "description": "Nominal filter efficiency based the particle count concentration before and after the filter against particles with a certain size distribution."
            },
            "NominalWeightedEfficiency": {
                "description": "Nominal filter efficiency based the particle weight concentration before and after the filter against particles with a certain size distribution."
            },
            "PressureDropCurve": {
                "description": "Under certain dust holding weight, DelPressure = f (fluidflowRate)"
            },
            "SeparationType": {
                "description": "Air particulate filter media separation type."
            },
            "WeightedEfficiencyCurve": {
                "description": "Weighted efficiency curve as a function of dust holding weight, efficiency = f (dust holding weight)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_filtertypeairparticlefilter.htm"
    },
    "Pset_FilterTypeCommon": {
        "properties": {
            "FinalResistance": {
                "description": "Filter fluid resistance when replacement is required (i.e., Pressure drop at the maximum air flowrate across the filter when the filter needs replacement per ASHRAE Standard 52.1)."
            },
            "FlowRateRange": {
                "description": "Possible range of fluid flowrate that can be delivered."
            },
            "InitialResistance": {
                "description": "Initial new filter fluid resistance (i.e., pressure drop at the maximum air flowrate across the filter when the filter is new per ASHRAE Standard 52.1)."
            },
            "NominalFilterFaceVelocity": {
                "description": "Filter face velocity."
            },
            "NominalFlowrate": {
                "description": "Nominal fluid flow rate through the filter."
            },
            "NominalMediaSurfaceVelocity": {
                "description": "Average fluid velocity at the media surface."
            },
            "NominalParticleGeometricMeanDiameter": {
                "description": "Particle geometric mean diameter associated with nominal efficiency."
            },
            "NominalParticleGeometricStandardDeviation": {
                "description": "Particle geometric standard deviation associated with nominal efficiency."
            },
            "NominalPressureDrop": {
                "description": "Total pressure drop across the filter."
            },
            "OperationTemperatureRange": {
                "description": "Allowable operation ambient fluid temperature range."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "Weight": {
                "description": "Weight of filter."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_filtertypecommon.htm"
    },
    "Pset_FilterTypeCompressedAirFilter": {
        "properties": {
            "AutomaticCondensateDischarge": {
                "description": "Whether or not the condensing water or oil is discharged automatically from the filter."
            },
            "CloggingIndicator": {
                "description": "Whether the filter has an indicator to display the degree of clogging of the filter."
            },
            "CompressedAirFilterType": {
                "description": "ACTIVATEDCARBON: absorbs oil vapor and odor; PARTICLE_FILTER: used to absorb solid particles of medium size; COALESCENSE_FILTER: used to absorb fine solid, oil, and water particles, also called micro filter"
            },
            "OperationPressureMax": {
                "description": "Maximum pressure under normal operating conditions."
            },
            "ParticleAbsorptionCurve": {
                "description": "Ratio of particles that are removed by the filter.  Each entry describes the ratio of particles absorbed greater than equal to the specified size and less than the next specified size.  For example,  given for 3 significant particle sizes >= 0,1 micro m, >= 1 micro m, >= 5 micro m"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_filtertypecompressedairfilter.htm"
    },
    "Pset_FilterTypeWaterFilter": {
        "properties": {
            "WaterFilterType": {
                "description": "Further qualifies the type of water filter.  Filtration removes undissolved matter; Purification removes dissolved matter; Softening replaces dissolved matter."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_filtertypewaterfilter.htm"
    },
    "Pset_FireSuppressionTerminalTypeBreechingInlet": {
        "properties": {
            "BreechingInletType": {
                "description": "Defines the type of breeching inlet."
            },
            "CouplingType": {
                "description": "Defines the type coupling on the inlet of the breeching inlet."
            },
            "HasCaps": {
                "description": "Does the inlet connection have protective caps."
            },
            "InletDiameter": {
                "description": "The inlet diameter of the breeching inlet."
            },
            "OutletDiameter": {
                "description": "The outlet diameter of the breeching inlet."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_firesuppressionterminaltypebreechinginlet.htm"
    },
    "Pset_FireSuppressionTerminalTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_firesuppressionterminaltypecommon.htm"
    },
    "Pset_FireSuppressionTerminalTypeFireHydrant": {
        "properties": {
            "BodyColor": {
                "description": "Color of the body of the hydrant."
            },
            "CapColor": {
                "description": "Color of the caps of the hydrant."
            },
            "DischargeFlowRate": {
                "description": "The volumetric rate of fluid discharge."
            },
            "FireHydrantType": {
                "description": "Defines the range of hydrant types from which the required type can be selected where."
            },
            "FlowClass": {
                "description": "Alphanumeric indication of the flow class of a hydrant (may be used in connection with or instead of the FlowRate property)."
            },
            "HoseConnectionSize": {
                "description": "The size of connections to which a hose may be connected (other than that to be linked to a pumping unit)."
            },
            "NumberOfHoseConnections": {
                "description": "The number of hose connections on the hydrant (excluding the pumper connection)."
            },
            "PressureRating": {
                "description": "Maximum pressure that the hydrant is manufactured to withstand."
            },
            "PumperConnectionSize": {
                "description": "The size of a connection to which a fire hose may be connected that is then linked to a pumping unit."
            },
            "WaterIsPotable": {
                "description": "Indication of whether the water flow from the hydrant is potable (set TRUE) or non potable (set FALSE)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_firesuppressionterminaltypefirehydrant.htm"
    },
    "Pset_FireSuppressionTerminalTypeHoseReel": {
        "properties": {
            "ClassOfService": {
                "description": "A classification of usage of the hose reel that may be applied."
            },
            "ClassificationAuthority": {
                "description": "The name of the authority that applies the classification of service to the hose reel (e.g. NFPA/FEMA)."
            },
            "HoseDiameter": {
                "description": "Notional diameter (bore) of the hose."
            },
            "HoseLength": {
                "description": "Notional length of the hose fitted to the hose reel when fully extended."
            },
            "HoseNozzleType": {
                "description": "Identifies the predefined types of nozzle (in terms of spray pattern) fitted to the end of the hose from which the type required may be set."
            },
            "HoseReelMountingType": {
                "description": "Identifies the predefined types of hose reel mounting from which the type required may be set."
            },
            "HoseReelType": {
                "description": "Identifies the predefined types of hose arrangement from which the type required may be set."
            },
            "InletConnectionSize": {
                "description": "Size of the inlet connection to the hose reel."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_firesuppressionterminaltypehosereel.htm"
    },
    "Pset_FireSuppressionTerminalTypeSprinkler": {
        "properties": {
            "Activation": {
                "description": "Identifies the predefined methods of sprinkler activation from which that required may be set."
            },
            "ActivationTemperature": {
                "description": "The temperature at which the object is designed to activate."
            },
            "BulbLiquidColor": {
                "description": "The color of the liquid in the bulb for a bulb activated sprinkler. Note that the liquid color varies according to the activation temperature requirement of the sprinkler head. Note also that this property does not need to be asserted for quick response activated sprinklers."
            },
            "ConnectionSize": {
                "description": "Size of the inlet connection to the sprinkler."
            },
            "CoverageArea": {
                "description": "The area that the sprinkler is designed to protect."
            },
            "DischargeCoefficient": {
                "description": "The coefficient of flow at the sprinkler."
            },
            "DischargeFlowRate": {
                "description": "The volumetric rate of fluid discharge."
            },
            "HasDeflector": {
                "description": "Indication of whether the sprinkler has a deflector (baffle) fitted to diffuse the discharge on activation (= TRUE) or not (= FALSE)."
            },
            "MaximumWorkingPressure": {
                "description": "Maximum pressure that the object is manufactured to withstand."
            },
            "ResidualFlowingPressure": {
                "description": "The residual flowing pressure in the pipeline at which the discharge flow rate is determined."
            },
            "Response": {
                "description": "Identifies the predefined methods of sprinkler response from which that required may be set."
            },
            "SprinklerType": {
                "description": "Identifies the predefined types of sprinkler  from which the type required may be set."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_firesuppressionterminaltypesprinkler.htm"
    },
    "Pset_FlowInstrumentPHistory": {
        "properties": {
            "Quality": {
                "description": "Indicates the quality of measurement or failure condition, which may be further qualified by the Status.  True: measured values are considered reliable; False: measured values are considered not reliable (i.e. a fault has been detected); Unknown: reliability of values is uncertain."
            },
            "Status": {
                "description": "Indicates an error code or identifier, whose meaning is specific to the particular automation system.  Example values include: 'ConfigurationError', 'NotConnected', 'DeviceFailure', 'SensorFailure', 'LastKnown, 'CommunicationsFailure', 'OutOfService'."
            },
            "Value": {
                "description": "Indicates measured values over time which may be recorded continuously or only when changed beyond a particular deadband."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_flowinstrumentphistory.htm"
    },
    "Pset_FlowInstrumentTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_flowinstrumenttypecommon.htm"
    },
    "Pset_FlowInstrumentTypePressureGauge": {
        "properties": {
            "DisplaySize": {
                "description": "The physical size of the display. For a dial pressure gauge it will be the diameter of the dial."
            },
            "PressureGaugeType": {
                "description": "Identifies the means by which pressure is displayed."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_flowinstrumenttypepressuregauge.htm"
    },
    "Pset_FlowInstrumentTypeThermometer": {
        "properties": {
            "DisplaySize": {
                "description": "The physical size of the display. In the case of a stem thermometer, this will be the length of the stem. For a dial thermometer, it will be the diameter of the dial."
            },
            "ThermometerType": {
                "description": "Identifies the means by which temperature is displayed."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_flowinstrumenttypethermometer.htm"
    },
    "Pset_FlowMeterOccurrence": {
        "properties": {
            "Purpose": {
                "description": "Enumeration defining the purpose of the flow meter occurrence."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_flowmeteroccurrence.htm"
    },
    "Pset_FlowMeterTypeCommon": {
        "properties": {
            "ReadOutType": {
                "description": "Indication of the form that readout from the meter takes. In the case of a dial read out, this may comprise multiple dials that give a cumulative reading and/or a mechanical odometer."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "RemoteReading": {
                "description": "Indicates whether the meter has a connection for remote reading through connection of a communication device (set TRUE) or not (set FALSE)."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_flowmetertypecommon.htm"
    },
    "Pset_FlowMeterTypeEnergyMeter": {
        "properties": {
            "MaximumCurrent": {
                "description": "The maximum allowed current that a device is certified to handle."
            },
            "MultipleTarriff": {
                "description": "Indicates whether meter has built-in support for multiple tarriffs (variable energy cost rates)."
            },
            "NominalCurrent": {
                "description": "The nominal current that is designed to be measured."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_flowmetertypeenergymeter.htm"
    },
    "Pset_FlowMeterTypeGasMeter": {
        "properties": {
            "ConnectionSize": {
                "description": "Defines the size of inlet and outlet pipe connections to the meter."
            },
            "GasType": {
                "description": "Defines the types of gas that may be specified."
            },
            "MaximumFlowRate": {
                "description": "Maximum rate of flow which the meter is expected to pass."
            },
            "MaximumPressureLoss": {
                "description": "Pressure loss expected across the meter under conditions of maximum flow."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_flowmetertypegasmeter.htm"
    },
    "Pset_FlowMeterTypeOilMeter": {
        "properties": {
            "ConnectionSize": {
                "description": "Defines the size of inlet and outlet pipe connections to the meter."
            },
            "MaximumFlowRate": {
                "description": "Maximum rate of flow which the meter is expected to pass."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_flowmetertypeoilmeter.htm"
    },
    "Pset_FlowMeterTypeWaterMeter": {
        "properties": {
            "BackflowPreventerType": {
                "description": "Identifies the type of backflow preventer installed to prevent the backflow of contaminated or polluted water from an irrigation/reticulation system to a potable water supply."
            },
            "ConnectionSize": {
                "description": "Defines the size of inlet and outlet pipe connections to the meter."
            },
            "MaximumFlowRate": {
                "description": "Maximum rate of flow which the meter is expected to pass."
            },
            "MaximumPressureLoss": {
                "description": "Pressure loss expected across the meter under conditions of maximum flow."
            },
            "Type": {
                "description": "Defines the allowed values for selection of the flow meter operation type."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_flowmetertypewatermeter.htm"
    },
    "Pset_FootingCommon": {
        "properties": {
            "LoadBearing": {
                "description": "Indicates whether the object is intended to carry loads (TRUE) or not (FALSE)"
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_footingcommon.htm"
    },
    "Pset_FurnitureTypeChair": {
        "properties": {
            "HighestSeatingHeight": {
                "description": "The value of seating height of high level if the chair height is adjustable."
            },
            "LowestSeatingHeight": {
                "description": "The value of seating height of low level if the chair height is adjustable."
            },
            "SeatingHeight": {
                "description": "The value of seating height if the chair height is not adjustable."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_furnituretypechair.htm"
    },
    "Pset_FurnitureTypeCommon": {
        "properties": {
            "IsBuiltIn": {
                "description": "Indicates whether the furniture type is intended to be 'built in' i.e. physically attached to a building or facility (= TRUE) or not i.e. Loose and movable (= FALSE)."
            },
            "MainColor": {
                "description": "The main color of the furniture of this type."
            },
            "NominalDepth": {
                "description": "The nominal depth of the furniture of this type. The size information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the size properties, provided in the attached property set, the geometric parameters take precedence."
            },
            "NominalHeight": {
                "description": "The nominal height of the furniture of this type. The size information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the size properties, provided in the attached property set, the geometric parameters take precedence."
            },
            "NominalLength": {
                "description": "The nominal length of the furniture of this type. The size information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the size properties, provided in the attached property set, the geometric parameters take precedence."
            },
            "Reference": {},
            "Status": {},
            "Style": {
                "description": "Description of the furniture style."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_furnituretypecommon.htm"
    },
    "Pset_FurnitureTypeDesk": {
        "properties": {
            "WorksurfaceArea": {
                "description": "The value of the work surface area of the desk."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_furnituretypedesk.htm"
    },
    "Pset_FurnitureTypeFileCabinet": {
        "properties": {
            "WithLock": {
                "description": "Indicates whether the file cabinet is lockable (= TRUE) or not (= FALSE)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_furnituretypefilecabinet.htm"
    },
    "Pset_FurnitureTypeTable": {
        "properties": {
            "NumberOfChairs": {
                "description": "Maximum number of chairs that can fit with the table for normal use."
            },
            "WorksurfaceArea": {
                "description": "The value of the work surface area of the desk.."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_furnituretypetable.htm"
    },
    "Pset_HeatExchangerTypeCommon": {
        "properties": {
            "Arrangement": {
                "description": "Defines the basic flow arrangements for the heat exchanger:"
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_heatexchangertypecommon.htm"
    },
    "Pset_HeatExchangerTypePlate": {
        "properties": {
            "NumberOfPlates": {
                "description": "Number of plates used by the plate heat exchanger."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_heatexchangertypeplate.htm"
    },
    "Pset_HumidifierPHistory": {
        "properties": {
            "AtmosphericPressure": {
                "description": "Ambient atmospheric pressure."
            },
            "SaturationEfficiency": {
                "description": "Saturation efficiency: Ratio of leaving air absolute humidity to the maximum absolute humidity."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_humidifierphistory.htm"
    },
    "Pset_HumidifierTypeCommon": {
        "properties": {
            "AirPressureDropCurve": {
                "description": "Air pressure drop versus air-flow rate."
            },
            "Application": {
                "description": "Humidifier application."
            },
            "InternalControl": {
                "description": "Internal modulation control."
            },
            "NominalAirFlowRate": {
                "description": "Nominal rate of air flow into which water vapor is added."
            },
            "NominalMoistureGain": {
                "description": "Nominal rate of water vapor added into the airstream."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "SaturationEfficiencyCurve": {
                "description": "Saturation efficiency as a function of the air flow rate."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "WaterRequirement": {
                "description": "Make-up water requirement."
            },
            "Weight": {
                "description": "The weight of the humidifier."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_humidifiertypecommon.htm"
    },
    "Pset_InterceptorTypeCommon": {
        "properties": {
            "CoverLength": {
                "description": "The length measured along the x-axis in the local coordinate system or the radius (in the case of a circular shape in plan) of the cover of the oil interceptor."
            },
            "CoverWidth": {
                "description": "The length measured along the x-axis in the local coordinate system of the cover of the oil interceptor."
            },
            "InletConnectionSize": {
                "description": "Size of the inlet connection."
            },
            "NominalBodyDepth": {
                "description": "Nominal or quoted =length, measured along the z-axis of the local coordinate system of the object, of the body of the object."
            },
            "NominalBodyLength": {
                "description": "Nominal or quoted length, measured along the x-axis of the local coordinate system of the object, of the body of the object."
            },
            "NominalBodyWidth": {
                "description": "Nominal or quoted length, measured along the y-axis of the local coordinate system of the object, of the body of the object."
            },
            "OutletConnectionSize": {
                "description": "Size of the outlet connection."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "VentilatingPipeSize": {
                "description": "Size of the ventilating pipe(s)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_interceptortypecommon.htm"
    },
    "Pset_JunctionBoxTypeCommon": {
        "properties": {
            "ClearDepth": {
                "description": "Clear unobstructed depth available for cable inclusion within the junction box."
            },
            "IP_Code": {
                "description": "IEC 60529 (1989) Classification of degrees of protection provided by enclosures (IP Code)."
            },
            "IsExternal": {
                "description": "Indication of whether the junction box type is allowed for exposure to outdoor elements (set TRUE where external exposure is allowed)."
            },
            "MountingType": {
                "description": "Method of mounting to be adopted for the type of junction box."
            },
            "NumberOfGangs": {
                "description": "Number of slots available for switches/outlets (most commonly 1, 2, 3, or 4)."
            },
            "PlacingType": {
                "description": "Location at which the type of junction box can be located."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "ShapeType": {
                "description": "Shape of the junction box."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_junctionboxtypecommon.htm"
    },
    "Pset_LampTypeCommon": {
        "properties": {
            "ColorAppearance": {
                "description": "In both the DIN and CIE standards, artificial light sources are classified in terms of their color appearance. To the human eye they all appear to be white; the difference can only be detected by direct comparison. Visual performance is not directly affected by differences in color appearance."
            },
            "ColorRenderingIndex": {
                "description": "The CRI indicates how well a light source renders eight standard colors compared to perfect reference lamp with the same color temperature. The CRI scale ranges from 1 to 100, with 100 representing perfect rendering properties."
            },
            "ColorTemperature": {
                "description": "The color temperature of any source of radiation is defined as the temperature (in Kelvin) of a black-body or Planckian radiator whose radiation has the same chromaticity as the source of radiation. Often the values are only approximate color temperatures as the black-body radiator cannot emit radiation of every chromaticity value. The color temperatures of the commonest artificial light sources range from less than 3000K (warm white) to 4000K (intermediate) and over 5000K (daylight)."
            },
            "ContributedLuminousFlux": {
                "description": "Luminous flux is a photometric measure of radiant flux, i.e. the volume of light emitted from a light source. Luminous flux is measured either for the interior as a whole or for a part of the interior (partial luminous flux for a solid angle). All other photometric parameters are derivatives of luminous flux. Luminous flux is measured in lumens (lm). The luminous flux is given as a nominal value for each lamp."
            },
            "LampBallastType": {
                "description": "The type of ballast used to stabilise gas discharge by limiting the current during operation and to deliver the necessary striking voltage for starting. Ballasts are needed to operate Discharge Lamps such as Fluorescent, Compact Fluorescent, High-pressure Mercury, Metal Halide and High-pressure Sodium Lamps.  Magnetic ballasts are chokes which limit the current passing through a lamp connected in series on the principle of self-induction. The resultant current and power are decisive for the efficient operation of the lamp. A specially designed ballast is required for every type of lamp to comply with lamp rating in terms of Luminous Flux, Color Appearance and service life. The two types of magnetic ballasts for fluorescent lamps are KVG Conventional   (EC-A series) and VVG Low-loss ballasts (EC-B series). Low-loss ballasts have a higher efficiency, which means reduced ballast losses and a lower thermal load. Electronic ballasts are used to run fluorescent lamps at high frequencies (approx. 35 - 40 kHz)."
            },
            "LampCompensationType": {
                "description": "Identifies the form of compensation used for power factor correction and radio suppression."
            },
            "LampMaintenanceFactor": {
                "description": "Non recoverable losses of luminous flux of a lamp due to lamp depreciation; i.e. the decreasing of light output of a luminaire due to aging and dirt."
            },
            "LightEmitterNominalPower": {
                "description": "Light emitter nominal power."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Spectrum": {
                "description": "The spectrum of radiation describes its composition with regard to wavelength. Light, for example, as the portion of electromagnetic radiation that is visible to the human eye, is radiation with wavelengths in the range of approx. 380 to 780 nm (1 nm = 10 m). The corresponding range of colours varies from violet to indigo, blue, green, yellow, orange, and red. These colours form a continuous spectrum, in which the various spectral sectors merge into each other."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_lamptypecommon.htm"
    },
    "Pset_LandRegistration": {
        "properties": {
            "IsPermanentID": {
                "description": "Indicates whether the identity assigned to a land parcel is permanent (= TRUE) or temporary (=FALSE)."
            },
            "LandID": {
                "description": "Identification number assigned by the statutory registration authority to a land parcel."
            },
            "LandTitleID": {
                "description": "Identification number assigned by the statutory registration authority to the title to a land parcel."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_landregistration.htm"
    },
    "Pset_LightFixtureTypeCommon": {
        "properties": {
            "LightFixtureMountingType": {
                "description": "A list of the available types of mounting for light fixtures from which that required may be selected."
            },
            "LightFixturePlacingType": {
                "description": "A list of the available types of placing specification for light fixtures from which that required may be selected."
            },
            "MaintenanceFactor": {
                "description": "The arithmetical allowance made for depreciation of lamps and reflective equipment from their initial values due to dirt, fumes, or age."
            },
            "MaximumPlenumSensibleLoad": {
                "description": "Maximum or Peak sensible thermal load contributed to return air plenum by the light fixture."
            },
            "MaximumSpaceSensibleLoad": {
                "description": "Maximum or Peak sensible thermal load contributed to the conditioned space by the light fixture."
            },
            "NumberOfSources": {
                "description": "Number of sources ."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "SensibleLoadToRadiant": {
                "description": "Percent of sensible thermal load to radiant heat."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "TotalWattage": {
                "description": "Wattage on whole lightfitting device with all sources intact."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_lightfixturetypecommon.htm"
    },
    "Pset_LightFixtureTypeSecurityLighting": {
        "properties": {
            "Addressablility": {
                "description": "The type of addressability."
            },
            "BackupSupplySystem": {
                "description": "The type of backup supply system."
            },
            "FixtureHeight": {
                "description": "The height of the fixture, such as the text height of an exit sign."
            },
            "PictogramEscapeDirection": {
                "description": "The direction of escape pictogram."
            },
            "SecurityLightingType": {
                "description": "The type of security lighting."
            },
            "SelfTestFunction": {
                "description": "The type of self test function."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_lightfixturetypesecuritylighting.htm"
    },
    "Pset_ManufacturerOccurrence": {
        "properties": {
            "AcquisitionDate": {
                "description": "The date that the manufactured item was purchased."
            },
            "AssemblyPlace": {
                "description": "Enumeration defining where the assembly is intended to take place, either in a factory, other offsite location or on the building site."
            },
            "BarCode": {
                "description": "The identity of the bar code given to an occurrence of the product."
            },
            "BatchReference": {
                "description": "The identity of the batch reference from which an occurrence of a product is taken."
            },
            "SerialNumber": {
                "description": "The serial number assigned to an occurrence of a product."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_manufactureroccurrence.htm"
    },
    "Pset_ManufacturerTypeInformation": {
        "properties": {
            "ArticleNumber": {
                "description": "Article number or reference that is be applied to a configured product according to a standard scheme for article number definition as defined by the manufacturer. It is often used as the purchasing number."
            },
            "AssemblyPlace": {
                "description": "Enumeration defining where the assembly is intended to take place, either in a factory or on the building site."
            },
            "GlobalTradeItemNumber": {
                "description": "The Global Trade Item Number (GTIN) is an identifier for trade items developed by GS1 (www.gs1.org)."
            },
            "Manufacturer": {
                "description": "The organization that manufactured and/or assembled the item."
            },
            "ModelLabel": {
                "description": "The descriptive model name of the product model (or product line) as assigned by the manufacturer of the manufactured item."
            },
            "ModelReference": {
                "description": "The model number or designator of the product model (or product line) as assigned by the manufacturer of the manufactured item."
            },
            "ProductionYear": {
                "description": "The year of production of the manufactured item."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_manufacturertypeinformation.htm"
    },
    "Pset_MaterialCombustion": {
        "properties": {
            "CO2Content": {
                "description": "Carbon dioxide (CO2) content of the products of combustion. This is measured in weight of CO2 per unit weight and is therefore unitless."
            },
            "COContent": {
                "description": "Carbon monoxide (CO) content of the products of combustion. This is measured in weight of CO per unit weight and is therefore unitless."
            },
            "N20Content": {
                "description": "Nitrous oxide (N2O) content of the products of combustion. This is measured in weight of N2O per unit weight and is therefore unitless."
            },
            "SpecificHeatCapacity": {
                "description": "Specific heat of the products of combustion: heat energy absorbed per temperature unit."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcmaterialresource/pset/pset_materialcombustion.htm"
    },
    "Pset_MaterialCommon": {
        "properties": {
            "MassDensity": {
                "description": "Material mass density."
            },
            "MolecularWeight": {
                "description": "Molecular weight of material (typically gas)."
            },
            "Porosity": {
                "description": "The void fraction of the total volume occupied by material (Vbr - Vnet)/Vbr."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcmaterialresource/pset/pset_materialcommon.htm"
    },
    "Pset_MaterialConcrete": {
        "properties": {
            "AdmixturesDescription": {
                "description": "Description of the admixtures added to the concrete mix."
            },
            "CompressiveStrength": {
                "description": "The compressive strength of the concrete."
            },
            "MaxAggregateSize": {
                "description": "The maximum aggregate size of the concrete."
            },
            "ProtectivePoreRatio": {
                "description": "The protective pore ratio indicating the frost-resistance of the concrete."
            },
            "WaterImpermeability": {
                "description": "Description of the water impermeability denoting the water repelling properties."
            },
            "Workability": {
                "description": "Description of the workability of the fresh concrete defined according to local standards."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcmaterialresource/pset/pset_materialconcrete.htm"
    },
    "Pset_MaterialEnergy": {
        "properties": {
            "GasPressure": {
                "description": "Fill pressure (e.g. for between-pane gas fills): the pressure exerted by a mass of gas confined in a constant volume."
            },
            "MoistureCapacityThermalGradient": {
                "description": "Thermal gradient coefficient for moisture capacity. Based on water vapor density."
            },
            "SolarRefractionIndex": {
                "description": "Index of refraction (solar) defines the \"bending\" of the solar ray when it passes from one medium into another."
            },
            "SpecificHeatTemperatureDerivative": {
                "description": "Specific heat temperature derivative."
            },
            "ThermalConductivityTemperatureDerivative": {
                "description": "Thermal conductivity temperature derivative."
            },
            "ViscosityTemperatureDerivative": {
                "description": "Viscosity temperature derivative."
            },
            "VisibleRefractionIndex": {
                "description": "Index of refraction (visible) defines the \"bending\" of the sola! r ray in the visible spectrum when it passes from one medium into another."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcmaterialresource/pset/pset_materialenergy.htm"
    },
    "Pset_MaterialFuel": {
        "properties": {
            "CarbonContent": {
                "description": "The carbon content in the fuel. This is measured in weight of carbon per unit weight of fuel and is therefore unitless."
            },
            "CombustionTemperature": {
                "description": "Combustion temperature of the material when air is at 298 K and 100 kPa."
            },
            "HigherHeatingValue": {
                "description": "Higher Heating Value is defined as the amount of energy released (MJ/kg) when a fuel is burned completely, and H2O is in liquid form in the combustion products."
            },
            "LowerHeatingValue": {
                "description": "Lower Heating Value is defined as the amount of energy released (MJ/kg) when a fuel is burned completely, and H2O is in vapor form in the combustion products."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcmaterialresource/pset/pset_materialfuel.htm"
    },
    "Pset_MaterialHygroscopic": {
        "properties": {
            "IsothermalMoistureCapacity": {
                "description": "Based on water vapor density."
            },
            "LowerVaporResistanceFactor": {
                "description": "The vapor permeability relationship of air/material (typically value > 1), measured in low relative humidity (typically in 0/50 % RH)."
            },
            "MoistureDiffusivity": {
                "description": "Moisture diffusivity is a transport property that is frequently used in the hygrothermal analysis of building envelope components."
            },
            "UpperVaporResistanceFactor": {
                "description": "The vapor permeability relationship of air/material (typically value > 1), measured in high relative humidity (typically in 95/50 % RH)."
            },
            "VaporPermeability": {
                "description": "The rate of water vapor transmission per unit area per unit of vapor pressure differential under test conditions."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcmaterialresource/pset/pset_materialhygroscopic.htm"
    },
    "Pset_MaterialMechanical": {
        "properties": {
            "DynamicViscosity": {
                "description": "A measure of the viscous resistance of the material."
            },
            "PoissonRatio": {
                "description": "A measure of the lateral deformations in the elastic range."
            },
            "ShearModulus": {
                "description": "A measure of the shear modulus of elasticity of the material."
            },
            "ThermalExpansionCoefficient": {
                "description": "A measure of the expansion coefficient for warming up the material about one Kelvin."
            },
            "YoungModulus": {
                "description": "A measure of the Young's modulus of elasticity of the material."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcmaterialresource/pset/pset_materialmechanical.htm"
    },
    "Pset_MaterialOptical": {
        "properties": {
            "SolarReflectanceBack": {
                "description": "Reflectance at normal incidence (solar): back side. Defines the fraction of the solar ray that is reflected and not transmitted when the ray passes from one medium into another, at the \"back\" side of the other material, perpendicular to the surface. Dependent on material and surface characteristics."
            },
            "SolarReflectanceFront": {
                "description": "Reflectance at normal incidence (solar): front side. Defines the fraction of the solar ray that is reflected and not transmitted when the ray passes from one medium into another, at the \"front\" side of the other material, perpendicular to the surface. Dependent on material and surface characteristics."
            },
            "SolarTransmittance": {
                "description": "Transmittance at normal incidence (solar). Defines the fraction of solar radiation that passes through per unit area, perpendicular to the surface."
            },
            "ThermalIrEmissivityBack": {
                "description": "Thermal IR emissivity: back side. Defines the fraction of thermal energy emitted per unit area to \"blackbody\" at the same temperature, through the \"back\" side of the material."
            },
            "ThermalIrEmissivityFront": {
                "description": "Thermal IR emissivity: front side. Defines the fraction of thermal energy emitted per unit area to \"blackbody\" at the same temperature, through the \"front\" side of the material."
            },
            "ThermalIrTransmittance": {
                "description": "Thermal IR transmittance at normal incidence. Defines the fraction of thermal energy that passes through per unit area, perpendicular to the surface."
            },
            "VisibleReflectanceBack": {
                "description": "Reflectance at normal incidence (visible): back side. Defines the fraction of the solar ray in the visible spectrum that is reflected and not transmitted when the ray passes from one medium into another, at the \"back\" side of the other material, perpendicular to the surface. Dependent on material and surface characteristics."
            },
            "VisibleReflectanceFront": {
                "description": "Reflectance at normal incidence (visible): front side. Defines the fraction of the solar ray in the visible spectrum that is reflected and not transmitted when the ray passes from one medium into another, at the \"front\" side of the other material, perpendicular to the surface. Dependent on material and surface characteristics."
            },
            "VisibleTransmittance": {
                "description": "Transmittance at normal incidence (visible). Defines the fraction of the visible spectrum of solar radiation that passes through per unit area, perpendicular to the surface."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcmaterialresource/pset/pset_materialoptical.htm"
    },
    "Pset_MaterialSteel": {
        "properties": {
            "HardeningModule": {
                "description": "A measure of the hardening module of the material (slope of stress versus strain curve after yield range)."
            },
            "PlasticStrain": {
                "description": "A measure of the permanent displacement, as in slip or twinning, which remains after the stress has been removed. Currently applied to a strain of 0.2% proportional stress of the material."
            },
            "ProportionalStress": {
                "description": "A measure of the proportional stress of the material. It describes the stress before the first plastic deformation occurs and is commonly measured at a deformation of 0.01%."
            },
            "Relaxations": {
                "description": "Measures of decrease in stress over long time intervals resulting from plastic flow. Different relaxation values for different initial stress levels for a material may be given. It describes the time dependent relative relaxation value for a given initial stress level at constant strain. Relating values are the \"RelaxationValue\". Related values are the \"InitialStress\""
            },
            "UltimateStrain": {
                "description": "A measure of the (engineering) strain at the state of ultimate stress of the material."
            },
            "UltimateStress": {
                "description": "A measure of the ultimate stress of the material."
            },
            "YieldStress": {
                "description": "A measure of the yield stress (or characteristic 0.2 percent proof stress) of the material."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcmaterialresource/pset/pset_materialsteel.htm"
    },
    "Pset_MaterialThermal": {
        "properties": {
            "BoilingPoint": {
                "description": "The boiling point of the material (fluid)."
            },
            "FreezingPoint": {
                "description": "The freezing point of the material (fluid)."
            },
            "SpecificHeatCapacity": {
                "description": "Defines the specific heat of the material: heat energy absorbed per temperature unit."
            },
            "ThermalConductivity": {
                "description": "The rate at which thermal energy is transmitted through the material."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcmaterialresource/pset/pset_materialthermal.htm"
    },
    "Pset_MaterialWater": {
        "properties": {
            "AcidityConcentration": {
                "description": "Maximum CaCO3 equivalent that would neutralize the acid."
            },
            "AlkalinityConcentration": {
                "description": "Maximum alkalinity concentration (maximum sum of concentrations of each of the negative ions substances measured as CaCO3)."
            },
            "DissolvedSolidsContent": {
                "description": "Fraction of the dissolved solids to the total amount of water. This is measured in weight of dissolved solids per weight of water and is therefore unitless."
            },
            "Hardness": {
                "description": "Water hardness as positive, multivalent ion concentration in the water (usually concentrations of calcium and magnesium ions in terms of calcium carbonate)."
            },
            "ImpuritiesContent": {
                "description": "Fraction of impurities such as dust to the total amount of water. This is measured in weight of impurities per weight of water and is therefore unitless."
            },
            "IsPotable": {
                "description": "If TRUE, then the water is considered potable."
            },
            "PHLevel": {
                "description": "Maximum water PH in a range from 0-14."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcmaterialresource/pset/pset_materialwater.htm"
    },
    "Pset_MaterialWood": {
        "properties": {
            "AppearanceGrade": {
                "description": "Grade with respect to visual quality."
            },
            "DimensionalChangeCoefficient": {
                "description": "Weighted dimensional change coefficient, relative to 1% change in moisture content."
            },
            "Layers": {
                "description": "Number of layers."
            },
            "Layup": {
                "description": "Configuration of the lamination."
            },
            "MoistureContent": {
                "description": "Total weight of moisture relative to oven-dried weight of the wood."
            },
            "Plies": {
                "description": "Number of plies."
            },
            "Species": {
                "description": "Wood species of a solid wood or laminated wood product."
            },
            "StrengthGrade": {
                "description": "Grade with respect to mechanical strength and stiffness."
            },
            "ThicknessSwelling": {
                "description": "Swelling ratio relative to board depth."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcmaterialresource/pset/pset_materialwood.htm"
    },
    "Pset_MaterialWoodBasedBeam": {
        "properties": {
            "ApplicableStructuralDesignMethod": {
                "description": "Determines whether mechanical material properties are applicable to 'ASD' = allowable stress design (working stress design), 'LSD' = limit state design, or 'LRFD' = load and resistance factor design."
            },
            "InPlane": {
                "children": {
                    "BendingStrength": {
                        "description": "Bending strength."
                    },
                    "CompStrength": {
                        "description": "Compressive strength, \u03b1=0\u00b0."
                    },
                    "CompStrengthPerp": {
                        "description": "Compressive strength, \u03b1=90\u00b0."
                    },
                    "InstabilityFactors": {
                        "description": "Defining values: slenderness ratios; defined values: either factors or divisors of the strength, depending on the design method (if <1: factors, if >1: divisors)."
                    },
                    "RaisedCompStrengthPerp": {
                        "description": "Alternative value for compressive strength, \u03b1=90\u00b0, which may be used under material and code dependent conditions (e.g. if deformation is tolerable, or far from ends of the member); conditions should be stated in SELF\\IfcProperty.Description."
                    },
                    "ReferenceDepth": {
                        "description": "Depth in bending for which the mechanical properties are valid; provided as a means to check the integrity of material assignment."
                    },
                    "ShearModulus": {
                        "description": "Shear modulus, mean value."
                    },
                    "ShearModulusMin": {
                        "description": "Shear modulus, minimal value."
                    },
                    "ShearStrength": {
                        "description": "Shear strength."
                    },
                    "TensileStrength": {
                        "description": "Tensile strength, \u03b1=0\u00b0."
                    },
                    "TensileStrengthPerp": {
                        "description": "Tensile strength, \u03b1=90\u00b0."
                    },
                    "TorsionalStrength": {
                        "description": "Shear strength in torsion."
                    },
                    "YoungModulus": {
                        "description": "Elastic modulus, mean value, \u03b1=0\u00b0."
                    },
                    "YoungModulusMin": {
                        "description": "Elastic modulus, minimal value, \u03b1=0\u00b0."
                    },
                    "YoungModulusPerp": {
                        "description": "Elastic modulus, mean value, \u03b1=90\u00b0."
                    },
                    "YoungModulusPerpMin": {
                        "description": "Elastic modulus, minimal value, \u03b1=90\u00b0."
                    }
                },
                "description": "Mechanical properties with respect to in-plane load, i.e. bending about the strong axis; tension zone of unbalanced layups is stressed in tension."
            },
            "InPlaneNegative": {
                "children": {
                    "BendingStrength": {
                        "description": "Bending strength."
                    },
                    "CompStrength": {
                        "description": "Compressive strength, \u03b1=0\u00b0."
                    },
                    "CompStrengthPerp": {
                        "description": "Compressive strength, \u03b1=90\u00b0."
                    },
                    "InstabilityFactors": {
                        "description": "Defining values: slenderness ratios; defined values: either factors or divisors of the strength, depending on the design method (if <1: factors, if >1: divisors)."
                    },
                    "RaisedCompStrengthPerp": {
                        "description": "Alternative value for compressive strength, \u03b1=90\u00b0, which may be used under material and code dependent conditions (e.g. if deformation is tolerable, or far from ends of the member); conditions should be stated in SELF\\IfcProperty.Description."
                    },
                    "ReferenceDepth": {
                        "description": "Depth in bending for which the mechanical properties are valid; provided as a means to check the integrity of material assignment."
                    },
                    "ShearModulus": {
                        "description": "Shear modulus, mean value."
                    },
                    "ShearModulusMin": {
                        "description": "Shear modulus, minimal value."
                    },
                    "ShearStrength": {
                        "description": "Shear strength."
                    },
                    "TensileStrength": {
                        "description": "Tensile strength, \u03b1=0\u00b0."
                    },
                    "TensileStrengthPerp": {
                        "description": "Tensile strength, \u03b1=90\u00b0."
                    },
                    "TorsionalStrength": {
                        "description": "Shear strength in torsion."
                    },
                    "YoungModulus": {
                        "description": "Elastic modulus, mean value, \u03b1=0\u00b0."
                    },
                    "YoungModulusMin": {
                        "description": "Elastic modulus, minimal value, \u03b1=0\u00b0."
                    },
                    "YoungModulusPerp": {
                        "description": "Elastic modulus, mean value, \u03b1=90\u00b0."
                    },
                    "YoungModulusPerpMin": {
                        "description": "Elastic modulus, minimal value, \u03b1=90\u00b0."
                    }
                },
                "description": "Mechanical properties with respect to in-plane load, i.e. bending about the strong axis; compression zone of unbalanced layups is stressed in tension."
            },
            "OutOfPlane": {
                "children": {
                    "BendingStrength": {
                        "description": "Bending strength."
                    },
                    "CompStrength": {
                        "description": "Compressive strength, \u03b1=0\u00b0."
                    },
                    "CompStrengthPerp": {
                        "description": "Compressive strength, \u03b1=90\u00b0."
                    },
                    "InstabilityFactors": {
                        "description": "Defining values: slenderness ratios; defined values: either factors or divisors of the strength, depending on the design method (if <1: factors, if >1: divisors)."
                    },
                    "RaisedCompStrengthPerp": {
                        "description": "Alternative value for compressive strength, \u03b1=90\u00b0, which may be used under material and code dependent conditions (e.g. if deformation is tolerable, or far from ends of the member); conditions should be stated in SELF\\IfcProperty.Description."
                    },
                    "ReferenceDepth": {
                        "description": "Depth in bending for which the mechanical properties are valid; provided as a means to check the integrity of material assignment."
                    },
                    "ShearModulus": {
                        "description": "Shear modulus, mean value."
                    },
                    "ShearModulusMin": {
                        "description": "Shear modulus, minimal value."
                    },
                    "ShearStrength": {
                        "description": "Shear strength."
                    },
                    "TensileStrength": {
                        "description": "Tensile strength, \u03b1=0\u00b0."
                    },
                    "TensileStrengthPerp": {
                        "description": "Tensile strength, \u03b1=90\u00b0."
                    },
                    "TorsionalStrength": {
                        "description": "Shear strength in torsion."
                    },
                    "YoungModulus": {
                        "description": "Elastic modulus, mean value, \u03b1=0\u00b0."
                    },
                    "YoungModulusMin": {
                        "description": "Elastic modulus, minimal value, \u03b1=0\u00b0."
                    },
                    "YoungModulusPerp": {
                        "description": "Elastic modulus, mean value, \u03b1=90\u00b0."
                    },
                    "YoungModulusPerpMin": {
                        "description": "Elastic modulus, minimal value, \u03b1=90\u00b0."
                    }
                },
                "description": "Mechanical properties with respect to out-of-plane load, i.e. bending about the weak axis."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcmaterialresource/pset/pset_materialwoodbasedbeam.htm"
    },
    "Pset_MaterialWoodBasedPanel": {
        "properties": {
            "ApplicableStructuralDesignMethod": {
                "description": "Determines whether mechanical material properties are applicable to 'ASD' = allowable stress design (working stress design), 'LSD' = limit state design, or 'LRFD' = load and resistance factor design."
            },
            "InPlane": {
                "children": {
                    "BearingStrength": {
                        "description": "Defining values: \u03b1; defined values: bearing strength of bolt holes, i.e. intrados pressure."
                    },
                    "BendingStrength": {
                        "description": "Defining values: \u03b1; defined values: bending strength."
                    },
                    "CompressiveStrength": {
                        "description": "Defining values: \u03b1; defined values: compressive strength."
                    },
                    "RaisedCompressiveStrength": {
                        "description": "Alternative value for compressive strength which may be used under material and code dependent conditions (e.g. if deformation is tolerable, or far from ends of the member); conditions should be stated in SELF\\IfcProperty.Description."
                    },
                    "ReferenceDepth": {
                        "description": "Depth in bending for which the mechanical properties are valid; provided as a means to check the integrity of material assignment."
                    },
                    "ShearModulus": {
                        "description": "Shear modulus."
                    },
                    "ShearStrength": {
                        "description": "Defining values: \u03b1; defined values: shear strength."
                    },
                    "TensileStrength": {
                        "description": "Defining values: \u03b1; defined values: tensile strength."
                    },
                    "YoungModulusBending": {
                        "description": "Defining values: \u03b1; defined values: elastic modulus in bending."
                    },
                    "YoungModulusCompression": {
                        "description": "Elastic modulus in compression."
                    },
                    "YoungModulusTension": {
                        "description": "Defining values: \u03b1; defined values: elastic modulus in tension."
                    }
                },
                "description": "Mechanical properties with respect to in-plane load, i.e. for function as a membrane."
            },
            "OutOfPlane": {
                "children": {
                    "BearingStrength": {
                        "description": "Defining values: \u03b1; defined values: bearing strength of bolt holes, i.e. intrados pressure."
                    },
                    "BendingStrength": {
                        "description": "Defining values: \u03b1; defined values: bending strength."
                    },
                    "CompressiveStrength": {
                        "description": "Defining values: \u03b1; defined values: compressive strength."
                    },
                    "RaisedCompressiveStrength": {
                        "description": "Alternative value for compressive strength which may be used under material and code dependent conditions (e.g. if deformation is tolerable, or far from ends of the member); conditions should be stated in SELF\\IfcProperty.Description."
                    },
                    "ReferenceDepth": {
                        "description": "Depth in bending for which the mechanical properties are valid; provided as a means to check the integrity of material assignment."
                    },
                    "ShearModulus": {
                        "description": "Shear modulus."
                    },
                    "ShearStrength": {
                        "description": "Defining values: \u03b1; defined values: shear strength."
                    },
                    "TensileStrength": {
                        "description": "Defining values: \u03b1; defined values: tensile strength."
                    },
                    "YoungModulusBending": {
                        "description": "Defining values: \u03b1; defined values: elastic modulus in bending."
                    },
                    "YoungModulusCompression": {
                        "description": "Elastic modulus in compression."
                    },
                    "YoungModulusTension": {
                        "description": "Defining values: \u03b1; defined values: elastic modulus in tension."
                    }
                },
                "description": "Mechanical properties with respect to out-of-plane load, i.e. for function as a plate; tension zone of unbalanced layups is stressed in tension."
            },
            "OutOfPlaneNegative": {
                "children": {
                    "BearingStrength": {
                        "description": "Defining values: \u03b1; defined values: bearing strength of bolt holes, i.e. intrados pressure."
                    },
                    "BendingStrength": {
                        "description": "Defining values: \u03b1; defined values: bending strength."
                    },
                    "CompressiveStrength": {
                        "description": "Defining values: \u03b1; defined values: compressive strength."
                    },
                    "RaisedCompressiveStrength": {
                        "description": "Alternative value for compressive strength which may be used under material and code dependent conditions (e.g. if deformation is tolerable, or far from ends of the member); conditions should be stated in SELF\\IfcProperty.Description."
                    },
                    "ReferenceDepth": {
                        "description": "Depth in bending for which the mechanical properties are valid; provided as a means to check the integrity of material assignment."
                    },
                    "ShearModulus": {
                        "description": "Shear modulus."
                    },
                    "ShearStrength": {
                        "description": "Defining values: \u03b1; defined values: shear strength."
                    },
                    "TensileStrength": {
                        "description": "Defining values: \u03b1; defined values: tensile strength."
                    },
                    "YoungModulusBending": {
                        "description": "Defining values: \u03b1; defined values: elastic modulus in bending."
                    },
                    "YoungModulusCompression": {
                        "description": "Elastic modulus in compression."
                    },
                    "YoungModulusTension": {
                        "description": "Defining values: \u03b1; defined values: elastic modulus in tension."
                    }
                },
                "description": "Mechanical properties with respect to out-of-plane load i.e. for function as a plate; compression zone of unbalanced layups is stressed in tension."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcmaterialresource/pset/pset_materialwoodbasedpanel.htm"
    },
    "Pset_MechanicalFastenerAnchorBolt": {
        "properties": {
            "AnchorBoltDiameter": {
                "description": "The nominal diameter of the anchor bolt bar(s)."
            },
            "AnchorBoltLength": {
                "description": "The length of the anchor bolt."
            },
            "AnchorBoltProtrusionLength": {
                "description": "The length of the protruding part of the anchor bolt."
            },
            "AnchorBoltThreadLength": {
                "description": "The length of the threaded part of the anchor bolt."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedcomponentelements/pset/pset_mechanicalfasteneranchorbolt.htm"
    },
    "Pset_MechanicalFastenerBolt": {
        "properties": {
            "HeadShape": {
                "description": "Shape of the bolt's head, e.g. 'Hexagon', 'Countersunk', 'Cheese'"
            },
            "KeyShape": {
                "description": "If applicable, shape of the head's slot, e.g. 'Slot', 'Allen'"
            },
            "NutShape": {
                "description": "Shape of the nut, e.g. 'Hexagon', 'Cap', 'Castle', 'Wing'"
            },
            "NutsCount": {
                "description": "Count of nuts to be mounted on one bolt"
            },
            "ThreadDiameter": {
                "description": "Nominal diameter of the thread, if different from the bolt's overall nominal diameter"
            },
            "ThreadLength": {
                "description": "Nominal length of the thread"
            },
            "WasherShape": {
                "description": "Shape of the washers, e.g. 'Standard', 'Square'"
            },
            "WashersCount": {
                "description": "Count of washers to be mounted on one bolt"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedcomponentelements/pset/pset_mechanicalfastenerbolt.htm"
    },
    "Pset_MechanicalFastenerCommon": {
        "properties": {
            "NominalDiameter": {
                "description": "The nominal diameter describing the cross-section size of the fastener type."
            },
            "NominalLength": {
                "description": "The nominal length describing the longitudinal dimensions of the fastener type."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedcomponentelements/pset/pset_mechanicalfastenercommon.htm"
    },
    "Pset_MedicalDeviceTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_medicaldevicetypecommon.htm"
    },
    "Pset_MemberCommon": {
        "properties": {
            "FireRating": {
                "description": "Fire rating for this object. It is given according to the national fire safety classification."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "LoadBearing": {
                "description": "Indicates whether the object is intended to carry loads (TRUE) or not (FALSE)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Roll": {
                "description": "Rotation against the longitudinal axis - relative to the global Z direction for all members that are non-vertical in regard to the global coordinate system (Profile direction equals global Z is Roll = 0.) The shape information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the shape properties, provided in the attached property, the geometric parameters take precedence. Note: new property in IFC4."
            },
            "Slope": {
                "description": "Slope angle - relative to horizontal (0.0 degrees). The shape information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the shape properties, provided in the attached property, the geometric parameters take precedence."
            },
            "Span": {
                "description": "Clear span for this object. The shape information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the shape properties, provided in the attached property, the geometric parameters take precedence."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of a material. Here the total thermal transmittance coefficient through the member within the direction of the thermal flow (including all materials). Note: new property in IFC4."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_membercommon.htm"
    },
    "Pset_MotorConnectionTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_motorconnectiontypecommon.htm"
    },
    "Pset_OpeningElementCommon": {
        "properties": {
            "FireExit": {
                "description": "Indication whether this object is designed to serve as an exit in the case of fire (TRUE) or not (FALSE). Here whether the space (in case of e.g., a corridor) is designed to serve as an exit space, e.g., for fire escape purposes."
            },
            "ProtectedOpening": {
                "description": "Indication whether the opening is considered to be protected under fire safety considerations. If (TRUE) it counts as a protected opening under the applicable building code, (FALSE) otherwise."
            },
            "Purpose": {
                "description": "Indication of the purpose for that opening, e.g. 'ventilation', 'access', etc."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'). Used to store the non-classification driven internal construction type."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_openingelementcommon.htm"
    },
    "Pset_OutletTypeCommon": {
        "properties": {
            "IsPluggableOutlet": {
                "description": "Indication of whether the outlet accepts a loose plug connection (= TRUE) or whether it is directly connected (= FALSE) or whether the form of connection has not yet been determined (= UNKNOWN)."
            },
            "NumberOfSockets": {
                "description": "The number of sockets that may be connected. In case of inconsistency, sockets defined on ports take precedence."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_outlettypecommon.htm"
    },
    "Pset_OutsideDesignCriteria": {
        "properties": {
            "BuildingThermalExposure": {
                "description": "The thermal exposure expected by the building based on surrounding site conditions."
            },
            "CoolingDesignDay": {
                "description": "The month, day  and time that has been selected for the cooling design calculations."
            },
            "CoolingDryBulb": {
                "description": "Outside dry bulb temperature for cooling design."
            },
            "CoolingWetBulb": {
                "description": "Outside wet bulb temperature for cooling design."
            },
            "HeatingDesignDay": {
                "description": "The month, day and time that has been selected for the heating design calculations."
            },
            "HeatingDryBulb": {
                "description": "Outside dry bulb temperature for heating design."
            },
            "HeatingWetBulb": {
                "description": "Outside wet bulb temperature for heating design."
            },
            "PrevailingWindDirection": {
                "description": "The prevailing wind angle direction measured from True North (0 degrees) in a clockwise direction."
            },
            "PrevailingWindVelocity": {
                "description": "The design wind velocity coming from the direction specified by the PrevailingWindDirection attribute."
            },
            "WeatherDataDate": {
                "description": "The date for which the weather data was gathered."
            },
            "WeatherDataStation": {
                "description": "The site weather data station description or reference to the data source from which weather data was obtained for use in calculations."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_outsidedesigncriteria.htm"
    },
    "Pset_PackingInstructions": {
        "properties": {
            "ContainerMaterial": {
                "description": "Special requirements for material used to contain an artefact."
            },
            "PackingCareType": {
                "description": "Identifies the predefined types of care that may be required when handling the artefact during a move where:"
            },
            "SpecialInstructions": {
                "description": "Special instructions for packing."
            },
            "WrappingMaterial": {
                "description": "Special requirements for material used to wrap an artefact."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedmgmtelements/pset/pset_packinginstructions.htm"
    },
    "Pset_Permit": {
        "properties": {
            "EndDate": {
                "description": "Date and time at which the permit ceases to be valid."
            },
            "EscortRequirement": {
                "description": "Indicates whether or not an escort is required to accompany persons carrying out a work order at or to/from the place of work (= TRUE) or not (= FALSE)."
            },
            "SpecialRequirements": {
                "description": "Any additional special requirements that need to be included in the permit to work."
            },
            "StartDate": {
                "description": "Date and time from which the permit becomes valid."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedmgmtelements/pset/pset_permit.htm"
    },
    "Pset_PileCommon": {
        "properties": {
            "LoadBearing": {},
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_pilecommon.htm"
    },
    "Pset_PipeConnectionFlanged": {
        "properties": {
            "BoltSize": {
                "description": "Size of the bolts securing the flange."
            },
            "BoltholePitch": {
                "description": "Diameter of the circle along which the boltholes are placed."
            },
            "BoreSize": {
                "description": "The nominal bore of the pipe flange."
            },
            "FlangeDiameter": {
                "description": "Overall diameter of the flange."
            },
            "FlangeStandard": {
                "description": "Designation of the standard describing the flange table."
            },
            "FlangeTable": {
                "description": "Designation of the standard table to which the flange conforms."
            },
            "FlangeThickness": {
                "description": "Thickness of the material from which the pipe bend is constructed."
            },
            "NumberOfBoltholes": {
                "description": "Number of boltholes in the flange."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_pipeconnectionflanged.htm"
    },
    "Pset_PipeFittingOccurrence": {
        "properties": {
            "Color": {
                "description": "The color of the pipe segment."
            },
            "InteriorRoughnessCoefficient": {
                "description": "The interior roughness coefficient of the pipe segment."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_pipefittingoccurrence.htm"
    },
    "Pset_PipeFittingPHistory": {
        "properties": {
            "FlowrateLeakage": {
                "description": "Leakage flowrate versus pressure difference."
            },
            "LossCoefficient": {
                "description": "Dimensionless loss coefficient used for calculating fluid resistance representing the ratio of total pressure loss to velocity pressure at a referenced cross-section."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_pipefittingphistory.htm"
    },
    "Pset_PipeFittingTypeBend": {
        "properties": {
            "BendAngle": {
                "description": "The change of direction of flow."
            },
            "BendRadius": {
                "description": "The radius of bending if circular arc or zero if sharp bend."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_pipefittingtypebend.htm"
    },
    "Pset_PipeFittingTypeCommon": {
        "properties": {
            "FittingLossFactor": {
                "description": "A factor that determines the pressure loss due to friction through the fitting."
            },
            "PressureClass": {
                "description": "The test or rated pressure classification of the fitting."
            },
            "PressureRange": {
                "description": "Allowable maximum and minimum working pressure (relative to ambient pressure)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "TemperatureRange": {
                "description": "Allowable maximum and minimum temperature."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_pipefittingtypecommon.htm"
    },
    "Pset_PipeFittingTypeJunction": {
        "properties": {
            "JunctionLeftAngle": {
                "description": "The change of direction of flow for the left junction."
            },
            "JunctionLeftRadius": {
                "description": "The radius of bending for the left junction."
            },
            "JunctionRightAngle": {
                "description": "The change of direction of flow for the right junction where 0 indicates straight segment."
            },
            "JunctionRightRadius": {
                "description": "The radius of bending for the right junction where 0 indicates sharp bend."
            },
            "JunctionType": {
                "description": "The type of junction. TEE=3 ports, CROSS = 4 ports."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_pipefittingtypejunction.htm"
    },
    "Pset_PipeSegmentOccurrence": {
        "properties": {
            "Color": {
                "description": "The color of the pipe segment."
            },
            "Gradient": {
                "description": "The gradient of the pipe segment."
            },
            "InteriorRoughnessCoefficient": {
                "description": "The interior roughness coefficient of the pipe segment."
            },
            "InvertElevation": {
                "description": "The invert elevation relative to the datum established for the project."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_pipesegmentoccurrence.htm"
    },
    "Pset_PipeSegmentPHistory": {
        "properties": {
            "FluidFlowLeakage": {
                "description": "Volumetric leakage flow rate."
            },
            "LeakageCurve": {
                "description": "Leakage per unit length curve versus working pressure."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_pipesegmentphistory.htm"
    },
    "Pset_PipeSegmentTypeCommon": {
        "properties": {
            "InnerDiameter": {
                "description": "The actual inner diameter of the pipe."
            },
            "NominalDiameter": {
                "description": "The nominal diameter of the pipe segment."
            },
            "OuterDiameter": {
                "description": "The actual outer diameter of the pipe."
            },
            "PressureRange": {
                "description": "Allowable maximum and minimum working pressure (relative to ambient pressure)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "TemperatureRange": {
                "description": "Allowable maximum and minimum temperature."
            },
            "WorkingPressure": {
                "description": "Working pressure."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_pipesegmenttypecommon.htm"
    },
    "Pset_PipeSegmentTypeCulvert": {
        "properties": {
            "ClearDepth": {
                "description": "The clear depth of the culvert."
            },
            "InternalWidth": {
                "description": "The internal width of the culvert."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_pipesegmenttypeculvert.htm"
    },
    "Pset_PipeSegmentTypeGutter": {
        "properties": {
            "FlowRating": {
                "description": "Actual flow capacity for the gutter. Value of 0.00 means this value has not been set."
            },
            "Slope": {
                "description": "Angle of the gutter to allow for drainage."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_pipesegmenttypegutter.htm"
    },
    "Pset_PlateCommon": {
        "properties": {
            "AcousticRating": {
                "description": "Acoustic rating for this object. It is provided according to the national building code. It indicates the sound transmission resistance of this object by an index ratio (instead of providing full sound absorbtion values)."
            },
            "FireRating": {
                "description": "Fire rating for this object. It is given according to the national fire safety classification."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "LoadBearing": {
                "description": "Indicates whether the object is intended to carry loads (TRUE) or not (FALSE)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of a material. It applies to the total door construction."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_platecommon.htm"
    },
    "Pset_PrecastConcreteElementFabrication": {
        "properties": {
            "ActualErectionDate": {
                "description": "Date erected."
            },
            "ActualProductionDate": {
                "description": "Production date (stripped from form)."
            },
            "AsBuiltLocationNumber": {
                "description": "Defines a unique location within a structure, the \u2018slot\u2019 into which the piece was installed. Where pieces share the same piece mark, they can be interchanged. The value is only known after erection."
            },
            "PieceMark": {
                "description": "Defines a unique piece for production purposes. All pieces with the same piece mark value are identical and interchangeable. The piece mark may be composed of sub-parts that have specific locally defined meaning (e.g. B-1A may denote a beam, of generic type \u20181\u2019 and specific shape \u2018A\u2019)."
            },
            "ProductionLotId": {
                "description": "The manufacturer's production lot identifier."
            },
            "SerialNumber": {
                "description": "The manufacturer's serial number for the precast concrete element."
            },
            "TypeDesignator": {
                "description": "Type designator for the precast concrete element. The content depends on local standards. For instance in Finland it usually a one-letter acronym, e.g. P=Column, K=reinforced concrete beam,etc."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_precastconcreteelementfabrication.htm"
    },
    "Pset_PrecastConcreteElementGeneral": {
        "properties": {
            "BatterAtEnd": {
                "description": "The angle, in radians, by which the formwork at the ending face of a piece is to be rotated from the vertical in order to compensate for the rotation of the face that will occur once the piece is stripped from its form, inducing camber due to eccentric prestressing."
            },
            "BatterAtStart": {
                "description": "The angle, in radians, by which the formwork at the starting face of a piece is to be rotated from the vertical in order to compensate for the rotation of the face that will occur once the piece is stripped from its form, inducing camber due to eccentric prestressing."
            },
            "CamberAtMidspan": {
                "description": "The camber deflection, measured from the midpoint of a cambered face of a piece to the midpoint of the chord joining the ends of the same face, as shown in the figure below, divided by the original (nominal) straight length of the face of the piece."
            },
            "CornerChamfer": {
                "description": "The chamfer in the corners of the precast element. The chamfer is presumed to be equal in both directions."
            },
            "DesignLocationNumber": {
                "description": "Defines a unique location within a structure, the \u2018slot\u2019 for which the piece was designed."
            },
            "FormStrippingStrength": {
                "description": "The minimum required compressive strength of the concrete at form stripping time."
            },
            "HollowCorePlugging": {
                "description": "A descriptive label for how the hollow core ends are treated: they may be left open, closed with a plug, or sealed with cast concrete. Values would be, for example: 'Unplugged', 'Plugged', 'SealedWithConcrete'. This property applies to  hollow core slabs only."
            },
            "InitialTension": {
                "description": "The initial stress of the tendon. This property applies to prestressed concrete elements only."
            },
            "LiftingStrength": {
                "description": "The minimum required compressive strength of the concrete when the concrete element is lifted."
            },
            "ManufacturingToleranceClass": {
                "description": "Classification designation of the manufacturing tolerances according to local standards."
            },
            "MinimumAllowableSupportLength": {
                "description": "The minimum allowable support length."
            },
            "PieceMark": {
                "description": "Defines a unique piece for production purposes. All pieces with the same piece mark value are identical and interchangeable. The piece mark may be composed of sub-parts that have specific locally defined meaning (e.g. B-1A may denote a beam, of generic type \u20181\u2019 and specific shape \u2018A\u2019)."
            },
            "ReleaseStrength": {
                "description": "The minimum required compressive strength of the concrete when the tendon stress is released. This property applies to prestressed concrete elements only."
            },
            "Shortening": {
                "description": "The ratio of the distance by which a precast piece is shortened after release from its form (due to compression induced by prestressing) to its original (nominal) length."
            },
            "SupportDuringTransportDescription": {
                "description": "Textual description of how the concrete element is supported during transportation."
            },
            "SupportDuringTransportDocReference": {
                "description": "Reference to an external document defining how the concrete element is supported during transportation."
            },
            "TendonRelaxation": {
                "description": "The maximum allowable relaxation of the tendon (usually expressed as %/1000 h).This property applies to prestressed concrete elements only."
            },
            "TransportationStrength": {
                "description": "The minimum required compressive strength of the concrete required for transportation."
            },
            "Twisting": {
                "description": "The angle, in radians, through which the end face of a precast piece is rotated with respect to its starting face, along its longitudinal axis, as a result of non-aligned supports. This measure is also termed the \u2018warping\u2019 angle."
            },
            "TypeDesignator": {
                "description": "Type designator for the precast concrete element. The content depends on local standards. For instance in Finland it usually a one-letter acronym, e.g. P=Column, K=reinforced concrete beam,etc."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_precastconcreteelementgeneral.htm"
    },
    "Pset_PrecastSlab": {
        "properties": {
            "AngleBetweenComponentAxes": {
                "description": "The angle between the axes of each pair of components."
            },
            "AngleToFirstAxis": {
                "description": "The angle of rotation of the axis of the first component relative to the \u2018West\u2019 edge of the slab."
            },
            "DistanceBetweenComponentAxes": {
                "description": "The distance between the axes of the components, measured along the \u2018South\u2019 edge of the slab."
            },
            "EdgeDistanceToFirstAxis": {
                "description": "The distance from the left (\u2018West\u2019) edge of the slab (in the direction of span of the components) to the axis of the first component."
            },
            "NominalThickness": {
                "description": "The nominal overall thickness of the slab."
            },
            "NominalToppingThickness": {
                "description": "The nominal thickness of the topping."
            },
            "ToppingType": {
                "description": "Defines if a topping is applied and what kind. Values are \u201cFull topping\u201d, \u201cPerimeter Wash\u201d, \u201cNone\u201d"
            },
            "TypeDesignator": {
                "description": "Type designator for the precast concrete slab, expressing mainly the component type. Possible values are \u201cHollow-core\u201d, \u201cDouble-tee\u201d, \u201cFlat plank\u201d, etc."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_precastslab.htm"
    },
    "Pset_ProfileArbitraryDoubleT": {
        "properties": {
            "FlangeBaseFillet": {
                "description": "Flange base fillet of the profile."
            },
            "FlangeChamfer": {
                "description": "Flange chamfer of the profile."
            },
            "FlangeDepth": {
                "description": "Flange depth of the profile."
            },
            "FlangeDraft": {
                "description": "Flange draft of the profile."
            },
            "FlangeTopFillet": {
                "description": "Flange top fillet of the profile."
            },
            "LeftFlangeWidth": {
                "description": "Left flange width of the profile."
            },
            "OverallDepth": {
                "description": "Overall depth of the profile."
            },
            "OverallWidth": {
                "description": "Overall width of the profile."
            },
            "RightFlangeWidth": {
                "description": "Right flange width of the profile."
            },
            "StemBaseChamfer": {
                "description": "Stem base chamfer of the profile."
            },
            "StemBaseFillet": {
                "description": "Stem base fillet of the profile."
            },
            "StemBaseWidth": {
                "description": "Stem base width of the profile."
            },
            "StemTopChamfer": {
                "description": "Stem top chamfer of the profile."
            },
            "StemTopFillet": {
                "description": "Stem top fillet of the profile."
            },
            "StemTopWidth": {
                "description": "Stem top width of the profile."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcprofileresource/pset/pset_profilearbitrarydoublet.htm"
    },
    "Pset_ProfileArbitraryHollowCore": {
        "properties": {
            "BaseChamfer": {
                "description": "Base chamfer of the profile."
            },
            "BottomCover": {
                "description": "Bottom cover of the profile."
            },
            "CenterCoreBaseHeight": {
                "description": "Center core base height of the profile."
            },
            "CenterCoreBaseWidth": {
                "description": "Center core base width of the profile."
            },
            "CenterCoreMiddleHeight": {
                "description": "Center core middle height of the profile."
            },
            "CenterCoreSpacing": {
                "description": "Center core spacing of the profile."
            },
            "CenterCoreTopHeight": {
                "description": "Center core top height of the profile."
            },
            "CenterCoreTopWidth": {
                "description": "Center core top width of the profile."
            },
            "CoreBaseHeight": {
                "description": "Core base height of the profile."
            },
            "CoreBaseWidth": {
                "description": "Core base width of the profile."
            },
            "CoreMiddleHeight": {
                "description": "Core middle height of the profile."
            },
            "CoreSpacing": {
                "description": "Core spacing of the profile."
            },
            "CoreTopHeight": {
                "description": "Core top height of the profile."
            },
            "CoreTopWidth": {
                "description": "Core top width of the profile."
            },
            "DraftBaseOffset": {
                "description": "Draft base offset of the profile."
            },
            "DraftSideOffset": {
                "description": "Draft side offset of the profile."
            },
            "EdgeDraft": {
                "description": "Edge draft of the profile."
            },
            "KeyDepth": {
                "description": "Key depth of the profile."
            },
            "KeyHeight": {
                "description": "Key height of the profile."
            },
            "KeyOffset": {
                "description": "Key offset of the profile."
            },
            "NumberOfCores": {
                "description": "Number of cores."
            },
            "OverallDepth": {
                "description": "Overall depth of the profile."
            },
            "OverallWidth": {
                "description": "Overall width of the profile."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcprofileresource/pset/pset_profilearbitraryhollowcore.htm"
    },
    "Pset_ProfileMechanical": {
        "properties": {
            "CentreOfGravityInX": {
                "description": "Location of the profile's centre of gravity (geometric centroid), measured along xp."
            },
            "CentreOfGravityInY": {
                "description": "Location of the profile's centre of gravity (geometric centroid), measured along yp."
            },
            "CrossSectionArea": {
                "description": "Area of the profile. For example measured in mm2. If given, the value of the cross section area shall be greater than zero."
            },
            "MassPerLength": {
                "description": "Mass per length, i.e. mass of a beam with a unit length of extrusion. For example measured in kg/m."
            },
            "MaximumPlateThickness": {
                "description": "This value may be needed for stress analysis and to handle buckling problems. It can also be derived from the given profile geometry or classification and therefore it is only an optional feature allowing for an explicit description. For example measured in mm."
            },
            "MaximumSectionModulusY": {
                "description": "Bending resistance about the ys axis at the point with maximum zs ordinate. For example measured in mm\u00b3."
            },
            "MaximumSectionModulusZ": {
                "description": "Bending resistance about the zs axis at the point with maximum ys ordinate. For example measured in mm\u00b3."
            },
            "MinimumPlateThickness": {
                "description": "This value may be needed for stress analysis and to handle buckling problems. It can also be derived from the given profile geometry or classification and therefore it is only an optional feature allowing for an explicit description. For example measured in mm."
            },
            "MinimumSectionModulusY": {
                "description": "Bending resistance about the ys axis at the point with minimum zs ordinate. For example measured in mm\u00b3."
            },
            "MinimumSectionModulusZ": {
                "description": "Bending resistance about the zs axis at the point with minimum ys ordinate. For example measured in mm\u00b3."
            },
            "MomentOfInertiaY": {
                "description": "Moment of inertia about ys (second moment of area, about ys). For example measured in mm4."
            },
            "MomentOfInertiaYZ": {
                "description": "Moment of inertia about ys and zs (product moment of area). For example measured in mm4."
            },
            "MomentOfInertiaZ": {
                "description": "Moment of inertia about zs (second moment of area, about zs). For example measured in mm4"
            },
            "Perimeter": {
                "description": "Perimeter of the profile for calculating the surface area. For example measured in mm."
            },
            "PlasticShapeFactorY": {
                "description": "Ratio of plastic versus elastic bending moment capacity about the section analysis axis ys. A dimensionless value."
            },
            "PlasticShapeFactorZ": {
                "description": "Ratio of plastic versus elastic bending moment capacity about the section analysis axis zs. A dimensionless value."
            },
            "ShearAreaY": {
                "description": "Area of the profile for calculating the shear stress due to shear force parallel to the section analysis axis ys. For example measured in mm\u00b2. If given, the shear area ys shall be non-negative."
            },
            "ShearAreaZ": {
                "description": "Area of the profile for calculating the shear stress due to shear force parallel to the section analysis axis zs. For example measured in mm\u00b2. If given, the shear area zs shall be non-negative."
            },
            "ShearCentreY": {
                "description": "Location of the profile's shear centre, measured along ys."
            },
            "ShearCentreZ": {
                "description": "Location of the profile's shear centre, measured along zs."
            },
            "ShearDeformationAreaY": {
                "description": "Area of the profile for calculating the shear deformation due to a shear force parallel to ys. For example measured in mm\u00b2. If given, the shear deformation area ys shall be non-negative."
            },
            "ShearDeformationAreaZ": {
                "description": "Area of the profile for calculating the shear deformation due to a shear force parallel to zs. For example measured in mm\u00b2. If given, the shear deformation area zs shall be non-negative."
            },
            "TorsionalConstantX": {
                "description": "Torsional constant about xs. For example measured in mm4."
            },
            "TorsionalSectionModulus": {
                "description": "Torsional resistance (about xs). For example measured in mm\u00b3."
            },
            "WarpingConstant": {
                "description": "Warping constant of the profile for torsional action. For example measured in mm6."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcprofileresource/pset/pset_profilemechanical.htm"
    },
    "Pset_ProjectOrderChangeOrder": {
        "properties": {
            "BudgetSource": {
                "description": "The budget source requested."
            },
            "ReasonForChange": {
                "description": "A description of the problem for why a change is needed."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedmgmtelements/pset/pset_projectorderchangeorder.htm"
    },
    "Pset_ProjectOrderMaintenanceWorkOrder": {
        "properties": {
            "ContractualType": {
                "description": "The contractual type of the work."
            },
            "FaultPriorityType": {
                "description": "Identifies the predefined types of priority that can be assigned from which the type may be set where:"
            },
            "IfNotAccomplished": {
                "description": "Comments if the job is not accomplished."
            },
            "LocationPriorityType": {
                "description": "Identifies the predefined types of priority that can be assigned from which the type may be set where:"
            },
            "MaintenaceType": {
                "description": "Identifies the predefined types of maintenance that can be done from which the type that generates the maintenance work order may be set where:"
            },
            "ProductDescription": {
                "description": "A textual description of the products that require the work."
            },
            "ScheduledFrequency": {
                "description": "The period of time between expected instantiations of a work order that may have been predefined."
            },
            "WorkTypeRequested": {
                "description": "Work type requested in circumstances where there are categorizations of types of work task. It could be used to identify a remedial task, minor work task, electrical task etc."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedmgmtelements/pset/pset_projectordermaintenanceworkorder.htm"
    },
    "Pset_ProjectOrderMoveOrder": {
        "properties": {
            "SpecialInstructions": {
                "description": "Special instructions that affect the move."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedmgmtelements/pset/pset_projectordermoveorder.htm"
    },
    "Pset_ProjectOrderPurchaseOrder": {
        "properties": {
            "IsFOB": {
                "description": "Indication of whether contents of the purchase order are delivered 'Free on Board' (= True) or not (= False). FOB is a shipping term which indicates that the supplier pays the shipping costs (and usually also the insurance costs) from the point of manufacture to a specified destination, at which point the buyer takes responsibility."
            },
            "ShipMethod": {
                "description": "Method of shipping that will be used for goods or services."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedmgmtelements/pset/pset_projectorderpurchaseorder.htm"
    },
    "Pset_ProjectOrderWorkOrder": {
        "properties": {
            "ContractualType": {
                "description": "The contractual type of the work."
            },
            "IfNotAccomplished": {
                "description": "Comments if the job is not accomplished."
            },
            "ProductDescription": {
                "description": "A textual description of the products that require the work."
            },
            "WorkTypeRequested": {
                "description": "Work type requested in circumstances where there are categorizations of types of work task. It could be used to identify a remedial task, minor work task, electrical task etc."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedmgmtelements/pset/pset_projectorderworkorder.htm"
    },
    "Pset_PropertyAgreement": {
        "properties": {
            "AgreementType": {
                "description": "Identifies the predefined types of property agreement from which the type required may be set."
            },
            "CommencementDate": {
                "description": "Date on which the agreement commences."
            },
            "ConditionCommencement": {
                "description": "Condition of property provided on commencement of the agreement e.g. cold shell, warm lit shell, broom clean, turn-key."
            },
            "ConditionTermination": {
                "description": "Condition of property required on termination of the agreement e.g. cold shell, warm lit shell, broom clean, turn-key."
            },
            "Duration": {
                "description": "The period of time for the lease."
            },
            "Identifier": {
                "description": "The identifier assigned to the agreement for the purposes of tracking."
            },
            "Options": {
                "description": "A statement of the options available in the agreement."
            },
            "PropertyName": {
                "description": "Addressing details of the property as stated within the agreement."
            },
            "Restrictions": {
                "description": "Restrictions that may be placed by a  competent authority."
            },
            "TerminationDate": {
                "description": "Date on which the agreement terminates."
            },
            "Version": {
                "description": "The version number of the agreement that is identified."
            },
            "VersionDate": {
                "description": "The date on which the version of the agreement became applicable."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_propertyagreement.htm"
    },
    "Pset_ProtectiveDeviceBreakerUnitI2TCurve": {
        "properties": {
            "BreakerUnitCurve": {
                "description": "A curve that establishes the let through energy of a breaker unit when a particular prospective current is applied.  Note that the breaker unit curve is defined within a Cartesian coordinate system and this fact must be asserted within the property set:"
            },
            "NominalCurrent": {
                "description": "A set of nominal currents in [A] for which the data of this instance is valid. At least one value shall be provided. Any value in the set shall not exceed the value of the  UltimateRatedCurrent associated with the same breaker unit."
            },
            "VoltageLevel": {
                "description": "The voltage levels of the protective device for which the data of the instance is valid. More than one value may be selected in the enumeration."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicebreakeruniti2tcurve.htm"
    },
    "Pset_ProtectiveDeviceBreakerUnitI2TFuseCurve": {
        "properties": {
            "BreakerUnitFuseBreakingingCurve": {
                "description": "A curve that establishes the let through breaking energy of a breaker unit when a particular prospective breaking current is applied.  Note that the breaker unit fuse breaking curve is defined within a Cartesian coordinate system and this fact must be:"
            },
            "BreakerUnitFuseMeltingCurve": {
                "description": "A curve that establishes the energy required to melt the fuse of a breaker unit when a particular prospective melting current is applied.  Note that the breaker unit fuse melting curve is defined within a Cartesian coordinate system and this fact must be:"
            },
            "VoltageLevel": {
                "description": "The voltage levels of the fuse for which the data of the instance is valid. More than one value may be selected in the enumeration."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicebreakeruniti2tfusecurve.htm"
    },
    "Pset_ProtectiveDeviceBreakerUnitIPICurve": {
        "properties": {
            "BreakerUnitIPICurve": {
                "description": "A curve that establishes the let through peak current of a breaker unit when a particular prospective current is applied.  Note that the breaker unit IPI curve is defined within a Cartesian coordinate system and this fact must be asserted within the property set:"
            },
            "NominalCurrent": {
                "description": "A set of nominal currents in [A] for which the data of this instance is valid. At least one value shall be provided. Any value in the set shall not exceed the value of the  UltimateRatedCurrent associated with the same breaker unit."
            },
            "VoltageLevel": {
                "description": "The voltage level of the protective device for which the data of the instance is valid. More than one value may be selected in the enumeration."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicebreakerunitipicurve.htm"
    },
    "Pset_ProtectiveDeviceBreakerUnitTypeMCB": {
        "properties": {
            "ICN60898": {
                "description": "The nominal breaking capacity in [A] for an MCB tested in accordance with the IEC 60898 series."
            },
            "ICS60898": {
                "description": "The service breaking capacity in [A] for an MCB tested in accordance with the IEC 60898 series."
            },
            "ICS60947": {
                "description": "The service breaking capacity in [A] for an MCB tested in accordance with the IEC 60947 series."
            },
            "ICU60947": {
                "description": "The ultimate breaking capacity in [A] for an MCB tested in accordance with the IEC 60947 series."
            },
            "NominalCurrents": {
                "description": "A set of nominal currents in [A] for which the data of this instance is valid. At least one value shall be provided. Any value in the set shall not exceed the value of the  UltimateRatedCurrent associated with the same breaker unit."
            },
            "PowerLoss": {
                "description": "The power loss in [W] per pole of the MCB  when the nominal current is flowing through the MCB."
            },
            "VoltageLevel": {
                "description": "The voltage levels for which the data of the instance is valid. More than one value may be selected in the enumeration."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicebreakerunittypemcb.htm"
    },
    "Pset_ProtectiveDeviceBreakerUnitTypeMotorProtection": {
        "properties": {
            "ICM60947": {
                "description": "The making capacity in [A] for a circuit breaker or motor protection device tested in accordance with the IEC 60947 series."
            },
            "ICS60947": {
                "description": "The service breaking capacity in [A] for a circuit breaker or motor protection device tested in accordance with the IEC 60947 series."
            },
            "ICU60947": {
                "description": "The ultimate breaking capacity in [A] for a circuit breaker or motor protection device tested in accordance with the IEC 60947 series."
            },
            "ICW60947": {
                "description": "The thermal withstand current in [A] for a circuit breaker or motor protection device tested in accordance with the IEC 60947 series. The value shall be related to 1 s."
            },
            "PerformanceClasses": {
                "description": "A set of designations of performance classes for the breaker unit for which the data of this instance is valid. A breaker unit being a motor protection device may be constructed for different levels of breaking capacities. A maximum of 7 different performance classes may be provided. Examples of performance classes that may be specified include B, C, N, S, H, L, V."
            },
            "VoltageLevel": {
                "description": "The voltage levels for which the data of the instance is valid. More than one value may be selected in the enumeration."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicebreakerunittypemotorprotection.htm"
    },
    "Pset_ProtectiveDeviceOccurrence": {
        "properties": {
            "GroundFaultCurrentSetValue": {
                "description": "Ground fault current set value. The set value of the ground tripping current if adjustable."
            },
            "GroundFaultFunction": {
                "description": "Applying ground fault function. A flag indicating that the ground fault function of the device is used. The value should be set to FALSE for devices not having a ground fault function, or if the ground fault function is not selected to be used."
            },
            "GroundFaultTrippingTime": {
                "description": "Ground fault tripping time. The set value of the ground fault tripping current if adjustable."
            },
            "GroundFaulti2tFunction": {
                "description": "Applying ground fault i2t function. A flag indicating that the I2t ground fault function of the device is used. The value should be set to TRUE only if the I2t function is explicitly selected for the device."
            },
            "InstantaneousCurrentSetValue": {
                "description": "Instantaneous current set value. The set value of the instantaneous tripping current if adjustable."
            },
            "InstantaneousTrippingTime": {
                "description": "Instantaneous tripping time. The set value of the instantaneous tripping time if adjustable."
            },
            "LongTimeCurrentSetValue": {
                "description": "Long time current set value. The set value of the long time tripping current if adjustable."
            },
            "LongTimeDelay": {
                "description": "Long time delay. The set value of the long time time-delay if adjustable."
            },
            "LongTimeFunction": {
                "description": "Applying long time function A flag indicating that the long time function (i.e. the thermal tripping) of the device is used. The value should be set to TRUE for all devices except those that allows the Long time function of the device not to be used."
            },
            "PoleUsage": {
                "description": "Pole usage."
            },
            "ShortTimeCurrentSetValue": {
                "description": "Short time current set value. The set value of the long time tripping current if adjustable."
            },
            "ShortTimeFunction": {
                "description": "Applying short time function A flag indicating that the short time function of the device is used. The value should be set to FALSE for devices not having a short time function, or if the short time function is not selected to be used."
            },
            "ShortTimeTrippingTime": {
                "description": "Short time tripping time. The set value of the short time tripping time if adjustable."
            },
            "ShortTimei2tFunction": {
                "description": "Applying short time i2t function. A flag indicating that the I2t short time function of the device is used. The value should be set to TRUE only if the I2t function  is explicitly selected for the device."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedeviceoccurrence.htm"
    },
    "Pset_ProtectiveDeviceTrippingCurve": {
        "properties": {
            "TrippingCurve": {
                "description": "A curve that establishes the release time of a tripping unit when a particular prospective current is applied.  Note that the tripping curve is defined within a Cartesian coordinate system and this fact must be asserted within the property set: "
            },
            "TrippingCurveType": {
                "description": "The type of tripping curve that is represented by the property set."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetrippingcurve.htm"
    },
    "Pset_ProtectiveDeviceTrippingFunctionGCurve": {
        "properties": {
            "CurrentTolerance1": {
                "description": "The tolerance for the current of time/current-curve in [%]."
            },
            "CurrentTolerance2": {
                "description": "The tolerance for the current of time/current-curve in [%] valid for times above CurrentTolereanceLimit1."
            },
            "CurrentToleranceLimit1": {
                "description": "The time limit in [s] limiting the application of CurrentTolerance1, if any. If the value is set to 0, the value of the CurrentTolerance1 is valid for the whole time/current-curve."
            },
            "ExternalAdjusted": {
                "description": "An indication if the ground fault protection may be adjusted according to an external current coil or not."
            },
            "IsCurrentTolerancePositiveOnly": {
                "description": "Indication whether the value of  CurrentTolerance1 is provided as a positive tolereance only  or not. If not, the value is proved as a pluss/minus tolerance."
            },
            "IsSelectable": {
                "description": "Indication whether the S-function can be switched off or not."
            },
            "IsTimeTolerancePositiveOnly": {
                "description": "Indication whether the value of  TimeTolerance1 is provided as a positive tolereance only  or not. If not, the value is proved as a pluss/minus tolerance."
            },
            "NominalCurrentAdjusted": {
                "description": "An indication if the tripping currents of the short time protection is related to the nominal current multiplied with the actual setting of the current adjustment, if any, of the long time protection part of the protective device, or not."
            },
            "ReleaseCurrent": {
                "description": "The release current in [x In] for the initial tripping of the S-function."
            },
            "ReleaseCurrentI2tEnd": {
                "description": "The release current in [x In] for the end point of the I2t tripping curve of the G-function, if any. The value of ReleaseCurrentI2tEnd shall be larger than ReleaseCurrentI2tStart."
            },
            "ReleaseCurrentI2tStart": {
                "description": "The release current in [x In] for the start point of the I2t tripping curve of the G-function, if any."
            },
            "ReleaseTime": {
                "description": "The release time in [s] for the initial tripping of the relevant part. This time indicates that for current lower than the indicated release current, the tripping time will be longer than the indicated release time. The value is given as a mean value."
            },
            "ReleaseTimeI2tEnd": {
                "description": "The release time in [s] for the end point of the I2 tripping curve of the G-function, if any. The value of ReleaseTimeI2tEnd shall be lower than ReleaseTimeI2tStart."
            },
            "ReleaseTimeI2tStart": {
                "description": "The release time in [s] for the start point of the I2t tripping curve of the G-function, if any."
            },
            "TimeTolerance1": {
                "description": "The tolerance for the time of time/current-curve in [%]."
            },
            "TimeTolerance2": {
                "description": "The tolerance for the time of the time/current-curve in [%] valid for currents above TimeToleranceLimit1."
            },
            "TimeToleranceLimit1": {
                "description": "The current limit in [x In] limiting the application of TimeTolerance1, if any. If the value is set to 0, the value of the TimeTolerance1 is valid for the whole time/current-curve."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetrippingfunctiongcurve.htm"
    },
    "Pset_ProtectiveDeviceTrippingFunctionICurve": {
        "properties": {
            "CurrentTolerance1": {
                "description": "The tolerance for the current of time/current-curve in [%]."
            },
            "CurrentTolerance2": {
                "description": "The tolerance for the current of time/current-curve in [%] valid for times above CurrentTolereanceLimit1."
            },
            "CurrentToleranceLimit1": {
                "description": "The time limit in [s] limiting the application of CurrentTolerance1, if any. If the value is set to 0, the value of the CurrentTolerance1 is valid for the whole time/current-curve."
            },
            "IsCurrentTolerancePositiveOnly": {
                "description": "Indication whether the value of  CurrentTolerance1 is provided as a positive tolereance only  or not. If not, the value is proved as a pluss/minus tolerance."
            },
            "IsOffWhenSFunctionOn": {
                "description": "Indication whether the I-function is automatically switched off when the S-function is switched on."
            },
            "IsSelectable": {
                "description": "Indication whether the S-function can be switched off or not."
            },
            "IsTimeTolerancePositiveOnly": {
                "description": "Indication whether the value of  TimeTolerance1 is provided as a positive tolereance only  or not. If not, the value is proved as a pluss/minus tolerance."
            },
            "MaxAdjustmentX_ICS": {
                "description": "Provides the maximum setting value for the available current adjustment in relation to the Ics breaking capacity of the protection device of which the actual tripping unit is a part of. The value is not asserted unless the instantaneous time protection is."
            },
            "NominalCurrentAdjusted": {
                "description": "An indication if the tripping currents of the short time protection is related to the nominal current multiplied with the actual setting of the current adjustment, if any, of the long time protection part of the protective device, or not."
            },
            "ReleaseCurrent": {
                "description": "The release current in [x In] for the initial tripping of the S-function."
            },
            "ReleaseTime": {
                "description": "The release time in [s] for the initial tripping of the relevant part. This time indicates that for current lower than the indicated release current, the tripping time will be longer than the indicated release time. The value is given as a mean value."
            },
            "TimeTolerance1": {
                "description": "The tolerance for the time of time/current-curve in [%]."
            },
            "TimeTolerance2": {
                "description": "The tolerance for the time of the time/current-curve in [%] valid for currents above TimeToleranceLimit1."
            },
            "TimeToleranceLimit1": {
                "description": "The current limit in [x In] limiting the application of TimeTolerance1, if any. If the value is set to 0, the value of the TimeTolerance1 is valid for the whole time/current-curve."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetrippingfunctionicurve.htm"
    },
    "Pset_ProtectiveDeviceTrippingFunctionLCurve": {
        "properties": {
            "IsSelectable": {
                "description": "Indication whether the L-function can be switched off or not."
            },
            "LowerCurrent1": {
                "description": "The current in [x In], indicating that for currents smaller than LowerCurrent1 the I2t part of the L-function will not trip the current,"
            },
            "LowerCurrent2": {
                "description": "The current in [x In], indicating the upper current limit of the lower time/current curve of the I2t part of the L-function."
            },
            "LowerTime1": {
                "description": "The time in [s], indicating that tripping times of the lower time/current curve lower than LowerTime1 is determined by the I2t part of the L-function."
            },
            "LowerTime2": {
                "description": "The time in [s], indicating the tripping times of the upper time/current curve at the LowerCurrent2."
            },
            "UpperCurrent1": {
                "description": "The current in [x In], indicating that for currents larger than UpperCurrent1 the I2t part of the L-function will trip the current."
            },
            "UpperCurrent2": {
                "description": "The current in [x In], indicating the upper current limit of the upper time/current curve of the I2t part of the L-function."
            },
            "UpperTime1": {
                "description": "The time in [s], indicating that tripping times of the upper time/current curve lower than UpperTime1 is determined by the I2t part of the L-function."
            },
            "UpperTime2": {
                "description": "The time in [s], indicating the tripping times of the upper time/current curve at the UpperCurrent2."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetrippingfunctionlcurve.htm"
    },
    "Pset_ProtectiveDeviceTrippingFunctionSCurve": {
        "properties": {
            "CurrentTolerance1": {
                "description": "The tolerance for the current of time/current-curve in [%]."
            },
            "CurrentTolerance2": {
                "description": "The tolerance for the current of time/current-curve in [%] valid for times above CurrentTolereanceLimit1."
            },
            "CurrentToleranceLimit1": {
                "description": "The time limit in [s] limiting the application of CurrentTolerance1, if any. If the value is set to 0, the value of the CurrentTolerance1 is valid for the whole time/current-curve."
            },
            "IsCurrentTolerancePositiveOnly": {
                "description": "Indication whether the value of  CurrentTolerance1 is provided as a positive tolereance only  or not. If not, the value is proved as a pluss/minus tolerance."
            },
            "IsOffWhenLfunctionOn": {
                "description": "Indication whether the S-function is automatically switched off when the I-function is switched on."
            },
            "IsSelectable": {
                "description": "Indication whether the S-function can be switched off or not."
            },
            "IsTimeTolerancePositiveOnly": {
                "description": "Indication whether the value of  TimeTolerance1 is provided as a positive tolereance only  or not. If not, the value is proved as a pluss/minus tolerance."
            },
            "NominalCurrentAdjusted": {
                "description": "An indication if the tripping currents of the short time protection is related to the nominal current multiplied with the actual setting of the current adjustment, if any, of the long time protection part of the protective device, or not."
            },
            "ReleaseCurrent": {
                "description": "The release current in [x In] for the initial tripping of the S-function."
            },
            "ReleaseCurrentI2tEnd": {
                "description": "The release current in [x In] for the end point of the I2t tripping curve of the S-function, if any. The value of ReleaseCurrentI2tEnd shall be larger than ReleaseCurrentI2tStart."
            },
            "ReleaseCurrentI2tStart": {
                "description": "The release current in [x In] for the start point of the I2t tripping curve of the S-function, if any."
            },
            "ReleaseTime": {
                "description": "The release time in [s] for the initial tripping of the relevant part. This time indicates that for current lower than the indicated release current, the tripping time will be longer than the indicated release time. The value is given as a mean value."
            },
            "ReleaseTimeI2tEnd": {
                "description": "The release time in [s] for the end point of the I2 tripping curve of the S-function, if any. The value of ReleaseTimeI2tEnd shall be lower than ReleaseTimeI2tStart."
            },
            "ReleaseTimeI2tStart": {
                "description": "The release time in [s] for the start point of the I2t tripping curve of the S-function, if any"
            },
            "TimeTolerance1": {
                "description": "The tolerance for the time of time/current-curve in [%]."
            },
            "TimeTolerance2": {
                "description": "The tolerance for the time of the time/current-curve in [%] valid for currents above TimeToleranceLimit1."
            },
            "TimeToleranceLimit1": {
                "description": "The current limit in [x In] limiting the application of TimeTolerance1, if any. If the value is set to 0, the value of the TimeTolerance1 is valid for the whole time/current-curve."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetrippingfunctionscurve.htm"
    },
    "Pset_ProtectiveDeviceTrippingUnitCurrentAdjustment": {
        "properties": {
            "AdjustmentDesignation": {
                "description": "The desgnation on the device for the adjustment."
            },
            "AdjustmentRange": {
                "description": "Upper and lower current adjustment limits for an AdjustmentValueType = RANGE. Note that this property should not have a value for an  AdjustmentValueType = LIST."
            },
            "AdjustmentRangeStepValue": {
                "description": "Step value of current adjustment for an AdjustmentValueType = RANGE. Note that this property should not have a value for an  AdjustmentValueType = LIST."
            },
            "AdjustmentValueType": {
                "description": "The type of adjustment value that is applied through the property set. This determines the properties that should be asserted (see below)."
            },
            "AdjustmentValues": {
                "description": "A list of current adjustment values that may be applied to a tripping unit for an AdjustmentValueType = LIST. A minimum of 1 and a maximum of 16 adjustment values may be specified. Note that this property should not have a value for an  AdjustmentValueType = RANGE."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetrippingunitcurrentadjustment.htm"
    },
    "Pset_ProtectiveDeviceTrippingUnitTimeAdjustment": {
        "properties": {
            "AdjustmentDesignation": {
                "description": "The desgnation on the device for the adjustment."
            },
            "AdjustmentRange": {
                "description": "Upper and lower time adjustment limits for an AdjustmentValueType = RANGE. Note that this property should not have a value for an  AdjustmentValueType = LIST."
            },
            "AdjustmentRangeStepValue": {
                "description": "Step value of time adjustment for an AdjustmentValueType = RANGE. Note that this property should not have a value for an  AdjustmentValueType = LIST."
            },
            "AdjustmentValueType": {
                "description": "The type of adjustment value that is applied through the property set. This determines the properties that should be asserted (see below)."
            },
            "AdjustmentValues": {
                "description": "A list of time adjustment values that may be applied to a tripping unit for an AdjustmentValueType = LIST. A minimum of 1 and a maximum of 16 adjustment values may be specified. Note that this property should not have a value for an  AdjustmentValueType = RANGE."
            },
            "CurrentForTimeDelay": {
                "description": "The tripping current in [x In] at which the time delay is specified. A value for this property should only be asserted for time delay of L-function, and for I2t of the S and G function."
            },
            "I2TApplicability": {
                "description": "The applicability of the time adjustment related to the tripping function."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetrippingunittimeadjustment.htm"
    },
    "Pset_ProtectiveDeviceTrippingUnitTypeCommon": {
        "properties": {
            "AtexVerified": {
                "description": "An indication whether the tripping_unit is verified to be applied in EX-environment or not."
            },
            "LimitingTerminalSize": {
                "description": "The maximum terminal size capacity of the device."
            },
            "OldDevice": {
                "description": "Indication whether the protection_ unit is out-dated or not. If not out-dated, the device is still for sale."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Standard": {
                "description": "The designation of the standard applicable for the definition of the characteristics of the tripping_unit."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "UseInDiscrimination": {
                "description": "An indication whether the time/current tripping information can be applied in a discrimination analysis or not."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetrippingunittypecommon.htm"
    },
    "Pset_ProtectiveDeviceTrippingUnitTypeElectroMagnetic": {
        "properties": {
            "CurveDesignation": {
                "description": "The designation of the trippingcurve given by the manufacturer. For a MCB the designation should be in accordance with the designations given in IEC 60898."
            },
            "DefinedTemperature": {
                "description": "The ambient temperature at which the thermal current/time-curve associated with this protection device is defined."
            },
            "ElectroMagneticTrippingUnitType": {
                "description": "A list of the available types of electric magnetic tripping unit  from which that required may be selected. These cover overload, none special, short circuit, motor protection and bi-metal tripping."
            },
            "I1": {
                "description": "The (thermal) lower testing current limit in [x In], indicating that for currents lower than I1, the tripping time shall be longer than the associated tripping time, T2."
            },
            "I2": {
                "description": "The (thermal) upper testing current limit in [x In], indicating that for currents larger than I2, the tripping time shall be shorter than the associated tripping time, T2."
            },
            "I4": {
                "description": "The lower electromagnetic testing current limit in [x In], indicating that for currents lower than I4, the tripping time shall be longer than the associated tripping time, T5, i.e. the device shall not trip instantaneous."
            },
            "I5": {
                "description": "The upper electromagnetic testing current limit in [x In], indicating that for currents larger than I5, the tripping time shall be shorter than or equal to the associated tripping time, T5, i.e. the device shall trip instantaneous."
            },
            "T2": {
                "description": "The (thermal) testing time in [s] associated with the testing currents I1 and I2."
            },
            "T5": {
                "description": "The electromagnetic testing time in [s] associated with the testing currents I4 and I5, i.e. electromagnetic tripping time"
            },
            "TemperatureFactor": {
                "description": "The correction factor (typically measured as %/deg K) for adjusting the thermal current/time to an ambient temperature different from the value given by the defined temperature."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetrippingunittypeelectromagnetic.htm"
    },
    "Pset_ProtectiveDeviceTrippingUnitTypeElectronic": {
        "properties": {
            "ElectronicTrippingUnitType": {
                "description": "A list of the available types of electronic tripping unit  from which that required may be selected."
            },
            "N_Protection": {
                "description": "An indication whether the electronic tripping unit has separate protection for the N conductor, or not."
            },
            "N_Protection_100": {
                "description": "An indication whether the electronic tripping unit is tripping if the current in the N conductor is more than 100% of that of the phase conductors. The property is only asserted if the property N_Protection is asserted."
            },
            "N_Protection_50": {
                "description": "An indication whether the electronic tripping unit is tripping if the current in the N conductor is more than 50% of that of the phase conductors. The property is only asserted if the property N_Protection is asserted."
            },
            "N_Protection_Select": {
                "description": "An indication whether the use of the N_Protection can be selected by the user or not. If both the properties N_Protection_50 and N_Protection_100 are asserted, the value of N_Protection_Select property is set to TRUE. The property is only asserted if the property N_Protection is asserted."
            },
            "NominalCurrents": {
                "description": "A set of values providing information on available modules (chips) for setting the nominal current of the protective device. If the set is empty, no nominal current modules are available for the tripping unit."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetrippingunittypeelectronic.htm"
    },
    "Pset_ProtectiveDeviceTrippingUnitTypeResidualCurrent": {
        "properties": {
            "TrippingUnitReleaseCurrent": {
                "description": "The value of tripping or residual current for which the device has the possibility to be equipped. The values are given in mA."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetrippingunittyperesidualcurrent.htm"
    },
    "Pset_ProtectiveDeviceTrippingUnitTypeThermal": {
        "properties": {
            "CurveDesignation": {
                "description": "The designation of the trippingcurve given by the manufacturer. For a MCB the designation should be in accordance with the designations given in IEC 60898."
            },
            "DefinedTemperature": {
                "description": "The ambient temperature at which the thermal current/time-curve associated with this protection device is defined."
            },
            "I1": {
                "description": "The (thermal) lower testing current limit in [x In], indicating that for currents lower than I1, the tripping time shall be longer than the associated tripping time, T2."
            },
            "I2": {
                "description": "The (thermal) upper testing current limit in [x In], indicating that for currents larger than I2, the tripping time shall be shorter than the associated tripping time, T2."
            },
            "T2": {
                "description": "The (thermal) testing time in [s] associated with the testing currents I1 and I2."
            },
            "TemperatureFactor": {
                "description": "The correction factor (typically measured as %/deg K) for adjusting the thermal current/time to an ambient temperature different from the value given by the defined temperature."
            },
            "ThermalTrippingUnitType": {
                "description": "A list of the available types of thermal tripping unit  from which that required may be selected."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetrippingunittypethermal.htm"
    },
    "Pset_ProtectiveDeviceTypeCircuitBreaker": {
        "properties": {
            "ICM60947": {
                "description": "The making capacity in [A] for a circuit breaker or motor protection device tested in accordance with the IEC 60947 series."
            },
            "ICS60947": {
                "description": "The service breaking capacity in [A] for a circuit breaker or motor protection device tested in accordance with the IEC 60947 series."
            },
            "ICU60947": {
                "description": "The ultimate breaking capacity in [A] for a circuit breaker or motor protection device tested in accordance with the IEC 60947 series."
            },
            "ICW60947": {
                "description": "The thermal withstand current in [A] for a circuit breaker or motor protection device tested in accordance with the IEC 60947 series. The value shall be related to 1 s."
            },
            "PerformanceClasses": {
                "description": "A set of designations of performance classes for the breaker unit for which the data of this instance is valid. A breaker unit being a circuit breaker may be constructed for different levels of breaking capacities. A maximum of 7 different performance classes may be provided. Examples of performance classes that may be specified include B, C, N, S, H, L, V."
            },
            "VoltageLevel": {
                "description": "The voltage levels for which the data of the instance is valid. More than one value may be selected in the enumeration."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetypecircuitbreaker.htm"
    },
    "Pset_ProtectiveDeviceTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetypecommon.htm"
    },
    "Pset_ProtectiveDeviceTypeEarthLeakageCircuitBreaker": {
        "properties": {
            "EarthFailureDeviceType": {
                "description": "A list of the available types of circuit breaker from which that required may be selected where:"
            },
            "Sensitivity": {
                "description": "The rated rms value of the vector sum of the instantaneous currents flowing in the main circuits of the device which causes the device to operate under specified conditions. (IEC 61008-1)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetypeearthleakagecircuitbreaker.htm"
    },
    "Pset_ProtectiveDeviceTypeFuseDisconnector": {
        "properties": {
            "FuseDisconnectorType": {
                "description": "A list of the available types of fuse disconnector from which that required may be selected where:"
            },
            "IC60269": {
                "description": "The breaking capacity in [A] for fuses in accordance with the IEC 60269 series."
            },
            "PowerLoss": {
                "description": "The power loss in [W] of the fuse when the nominal current is flowing through the fuse."
            },
            "VoltageLevel": {
                "description": "The voltage levels for which the data of the instance is valid. More than one value may be selected in the enumeration."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetypefusedisconnector.htm"
    },
    "Pset_ProtectiveDeviceTypeResidualCurrentCircuitBreaker": {
        "properties": {
            "Sensitivity": {
                "description": "Current leakage to an unwanted leading path during normal operation (IEC 151-14-49)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetyperesidualcurrentcircuitbreaker.htm"
    },
    "Pset_ProtectiveDeviceTypeResidualCurrentSwitch": {
        "properties": {
            "Sensitivity": {
                "description": "Current leakage to an unwanted leading path during normal operation (IEC 151-14-49)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetyperesidualcurrentswitch.htm"
    },
    "Pset_ProtectiveDeviceTypeVaristor": {
        "properties": {
            "VaristorType": {
                "description": "A list of the available types of varistor  from which that required may be selected."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_protectivedevicetypevaristor.htm"
    },
    "Pset_PumpOccurrence": {
        "properties": {
            "BaseType": {
                "description": "Defines general types of pump bases."
            },
            "DriveConnectionType": {
                "description": "The way the pump drive mechanism is connected to the pump."
            },
            "ImpellerDiameter": {
                "description": "Diameter of pump impeller - used to scale performance of geometrically similar pumps."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_pumpoccurrence.htm"
    },
    "Pset_PumpPHistory": {
        "properties": {
            "Flowrate": {
                "description": "The actual operational fluid flowrate."
            },
            "MechanicalEfficiency": {
                "description": "The pumps operational mechanical efficiency."
            },
            "OverallEfficiency": {
                "description": "The pump and motor overall operational efficiency."
            },
            "Power": {
                "description": "The actual power consumption of the pump."
            },
            "PressureRise": {
                "description": "The developed pressure."
            },
            "RotationSpeed": {
                "description": "Pump rotational speed."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_pumpphistory.htm"
    },
    "Pset_PumpTypeCommon": {
        "properties": {
            "ConnectionSize": {
                "description": "The connection size of the to and from the pump."
            },
            "FlowRateRange": {
                "description": "Allowable range of volume of fluid being pumped against the resistance specified."
            },
            "FlowResistanceRange": {
                "description": "Allowable range of frictional resistance against which the fluid is being pumped."
            },
            "NetPositiveSuctionHead": {
                "description": "Minimum liquid pressure at the pump inlet to prevent cavitation."
            },
            "NominalRotationSpeed": {
                "description": "Pump rotational speed under nominal conditions."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "TemperatureRange": {
                "description": "Allowable operational range of the fluid temperature."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_pumptypecommon.htm"
    },
    "Pset_RailingCommon": {
        "properties": {
            "Diameter": {
                "description": "Diameter of the object. It is the diameter of the handrail of the railing. The size information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the size properties, provided in the attached property set, the geometric parameters take precedence. Here the diameter of the hand or guardrail within the railing."
            },
            "Height": {
                "description": "Height of the object. It is the upper hight of the railing above the floor or stair. The size information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the size properties, provided in the attached property set, the geometric parameters take precedence."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_railingcommon.htm"
    },
    "Pset_RampCommon": {
        "properties": {
            "FireExit": {
                "description": "Indication whether this object is designed to serve as an exit in the case of fire (TRUE) or not (FALSE). Here it defines an exit ramp in accordance to the national building code."
            },
            "FireRating": {
                "description": "Fire rating for this object. It is given according to the national fire safety classification."
            },
            "HandicapAccessible": {
                "description": "Indication that this object is designed to be accessible by the handicapped.  Set to (TRUE) if this ramp is rated as handicap accessible  according the local building codes, otherwise (FALSE)."
            },
            "HasNonSkidSurface": {
                "description": "Indication whether the surface finish is designed to prevent slippery (TRUE) or not (FALSE)."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "LoadBearing": {},
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "RequiredHeadroom": {
                "description": "Required headroom clearance for the passageway according to the applicable building code or additional requirements."
            },
            "RequiredSlope": {
                "description": "Required sloping angle of the object  - relative to horizontal (0.0 degrees). Required maximum slope for the passageway according to the applicable building code or additional requirements."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "ThermalTransmittance": {}
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_rampcommon.htm"
    },
    "Pset_RampFlightCommon": {
        "properties": {
            "ClearWidth": {
                "description": "Actual clear width measured as the clear space for accessibility and egress; it is a measured distance betwen the two handrails or the wall and a handrail on a ramp. The shape information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the shape properties, provided in the attached property, the geometric parameters take precedence."
            },
            "CounterSlope": {
                "description": "Sloping angle of the object, measured perpendicular to the slope  - relative to horizontal (0.0 degrees).  Actual maximum slope for the passageway measured perpendicular to the direction of travel according to the current design. The shape information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the shape properties, provided in the attached property, the geometric parameters take precedence.  Note: new property in IFC4."
            },
            "Headroom": {
                "description": "Actual headroom clearance for the passageway according to the current design.  The shape information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the shape properties, provided in the attached property, the geometric parameters take precedence."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Slope": {
                "description": "Sloping angle of the object  - relative to horizontal (0.0 degrees).  Actual maximum slope for the passageway according to the current design. The shape information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the shape properties, provided in the attached property, the geometric parameters take precedence."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_rampflightcommon.htm"
    },
    "Pset_ReinforcementBarCountOfIndependentFooting": {
        "properties": {
            "Description": {
                "description": "Description of the reinforcement."
            },
            "Reference": {
                "description": "A descriptive label for the general reinforcement type."
            },
            "XDirectionLowerBarCount": {
                "description": "The number of bars with X direction lower bar."
            },
            "XDirectionUpperBarCount": {
                "description": "The number of bars with X direction upper bar."
            },
            "YDirectionLowerBarCount": {
                "description": "The number of bars with Y direction lower bar."
            },
            "YDirectionUpperBarCount": {
                "description": "The number of bars with Y direction upper bar."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_reinforcementbarcountofindependentfooting.htm"
    },
    "Pset_ReinforcementBarPitchOfBeam": {
        "properties": {
            "Description": {
                "description": "Description of the reinforcement."
            },
            "Reference": {
                "description": "A descriptive label for the general reinforcement type."
            },
            "SpacingBarPitch": {
                "description": "The pitch length of the spacing bar."
            },
            "StirrupBarPitch": {
                "description": "The pitch length of the stirrup bar."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_reinforcementbarpitchofbeam.htm"
    },
    "Pset_ReinforcementBarPitchOfColumn": {
        "properties": {
            "Description": {
                "description": "Description of the reinforcement."
            },
            "HoopBarPitch": {
                "description": "The pitch length of the hoop bar."
            },
            "Reference": {
                "description": "A descriptive label for the general reinforcement type."
            },
            "ReinforcementBarType": {
                "description": "Defines the type of the reinforcement bar."
            },
            "XDirectionTieHoopBarPitch": {
                "description": "The X direction pitch length of the tie hoop."
            },
            "XDirectionTieHoopCount": {
                "description": "The number of bars with X direction tie hoop bars."
            },
            "YDirectionTieHoopBarPitch": {
                "description": "The Y direction pitch length of the tie hoop."
            },
            "YDirectionTieHoopCount": {
                "description": "The number of bars with Y direction tie hoop bars."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_reinforcementbarpitchofcolumn.htm"
    },
    "Pset_ReinforcementBarPitchOfContinuousFooting": {
        "properties": {
            "CrossingLowerBarPitch": {
                "description": "The pitch length of the crossing lower bar."
            },
            "CrossingUpperBarPitch": {
                "description": "The pitch length of the crossing upper bar."
            },
            "Description": {
                "description": "Description of the reinforcement."
            },
            "Reference": {
                "description": "A descriptive label for the general reinforcement type."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_reinforcementbarpitchofcontinuousfooting.htm"
    },
    "Pset_ReinforcementBarPitchOfSlab": {
        "properties": {
            "Description": {
                "description": "Description of the reinforcement."
            },
            "LongInsideCenterLowerBarPitch": {
                "description": "The pitch length of the long inside center lower bar."
            },
            "LongInsideCenterTopBarPitch": {
                "description": "The pitch length of the long inside center top bar."
            },
            "LongInsideEndLowerBarPitch": {
                "description": "The pitch length of the long inside end lower bar."
            },
            "LongInsideEndTopBarPitch": {
                "description": "The pitch length of the long inside end top bar."
            },
            "LongOutsideLowerBarPitch": {
                "description": "The pitch length of the long outside lower bar."
            },
            "LongOutsideTopBarPitch": {
                "description": "The pitch length of the long outside top bar."
            },
            "Reference": {
                "description": "A descriptive label for the general reinforcement type."
            },
            "ShortInsideCenterLowerBarPitch": {
                "description": "The pitch length of the short inside center lower bar."
            },
            "ShortInsideCenterTopBarPitch": {
                "description": "The pitch length of the short inside center top bar."
            },
            "ShortInsideEndLowerBarPitch": {
                "description": "The pitch length of the short inside end lower bar."
            },
            "ShortInsideEndTopBarPitch": {
                "description": "The pitch length of the short inside end top bar."
            },
            "ShortOutsideLowerBarPitch": {
                "description": "The pitch length of the short outside lower bar."
            },
            "ShortOutsideTopBarPitch": {
                "description": "The pitch length of the short outside top bar."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_reinforcementbarpitchofslab.htm"
    },
    "Pset_ReinforcementBarPitchOfWall": {
        "properties": {
            "BarAllocationType": {
                "description": "Defines the type of the reinforcement bar allocation."
            },
            "Description": {
                "description": "Description of the reinforcement."
            },
            "HorizontalBarPitch": {
                "description": "The pitch length of the horizontal bar."
            },
            "Reference": {
                "description": "A descriptive label for the general reinforcement type."
            },
            "SpacingBarPitch": {
                "description": "The pitch length of the spacing bar."
            },
            "VerticalBarPitch": {
                "description": "The pitch length of the vertical bar."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_reinforcementbarpitchofwall.htm"
    },
    "Pset_ReinforcingBarCommon": {
        "properties": {
            "BarLength": {
                "description": "The total length of the reinforcing bar. The total length of bended bars are calculated according to local standards with corrections for the bends."
            },
            "BarSpacing": {
                "description": "The spacing between bars if constant."
            },
            "BarSurface": {
                "description": "Indicator for whether the bar surface is plain or textured."
            },
            "BendingParameters": {
                "description": "If this mesh type is bent rather than planar, this attribute provides bending shape parameters. Their meaning is defined by the bending shape code and the respective standard."
            },
            "BendingShapeCode": {
                "description": "Shape code per a standard like ACI 315, ISO 3766, or a similar standard.  It is presumed that a single standard for defining the bar bending is used throughout the project and that this standard is referenced from the IfcProject object through the IfcDocumentReference mechanism."
            },
            "NominalDiameter": {
                "description": "The nominal diameter defining the cross-section size of the reinforcing bar."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_reinforcingbarcommon.htm"
    },
    "Pset_ReinforcingMeshCommon": {
        "properties": {
            "LongitudinalBarNominalDiameter": {},
            "LongitudinalBarSpacing": {},
            "LongitudinalBarSurface": {
                "description": "Indicator for whether the bar surface is plain or textured."
            },
            "MeshLength": {},
            "MeshWidth": {},
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "TransverseBarBendingParameters": {
                "description": "If this mesh type is bent rather than planar, this attribute provides bending shape parameters. Their meaning is defined by the bending shape code and the respective standard."
            },
            "TransverseBarBendingShapeCode": {
                "description": "Shape code per a standard like ACI 315, ISO 3766, or a similar standard.  It is presumed that a single standard for defining the bar bending is used throughout the project and that this standard is referenced from the IfcProject object through the IfcDocumentReference mechanism."
            },
            "TransverseBarNominalDiameter": {},
            "TransverseBarSpacing": {},
            "TransverseBarSurface": {
                "description": "Indicator for whether the bar surface is plain or textured."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_reinforcingmeshcommon.htm"
    },
    "Pset_Risk": {
        "properties": {
            "AffectsSurroundings": {
                "description": "Indicates wether the risk affects only to the person assigned to that task (FALSE) or if it can also affect to the people in the surroundings (TRUE)."
            },
            "AssessmentOfRisk": {
                "description": "Likelihood of risk event occurring."
            },
            "NatureOfRisk": {
                "description": "An indication of the generic nature of the risk that might be encountered. "
            },
            "PreventiveMeassures": {
                "description": "Identifies preventive measures to be taken to mitigate risk."
            },
            "RiskCause": {
                "description": "A value that may be assigned to capture the cause or trigger for the risk. An example might be 'poor fixing'."
            },
            "RiskConsequence": {
                "description": "Indicates the level of severity of the consequences that the risk would have in case it happens."
            },
            "RiskOwner": {
                "description": "A determination of who is the owner of the risk by reference to principal roles of organizations within a project. Determination of the specific organization should be by reference to instances of IfcActorRole assigned to instances of IfcOrganization (if assigned)."
            },
            "RiskRating": {
                "description": "A general rating of the risk that may be determined from a combination of the risk assessment and risk consequence."
            },
            "RiskType": {
                "description": "Identifies the predefined types of risk from which the type required may be set."
            },
            "SubNatureOfRisk1": {
                "description": "A first subsidiary value that might be assigned to designate a more specific type of risk."
            },
            "SubNatureOfRisk2": {
                "description": "A second subsidiary value that might be assigned to designate a more specific type of risk. An example might be 'o person and property'."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_risk.htm"
    },
    "Pset_RoofCommon": {
        "properties": {
            "AcousticRating": {
                "description": "Acoustic rating for this object. It is provided according to the national building code. It indicates the sound transmission resistance of this object by an index ratio (instead of providing full sound absorbtion values)."
            },
            "FireRating": {
                "description": "Fire rating for this object. It is given according to the national fire safety classification."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "LoadBearing": {},
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of a material. Here the total thermal transmittance coefficient through the roof surface (including all materials)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_roofcommon.htm"
    },
    "Pset_SanitaryTerminalTypeBath": {
        "properties": {
            "BathType": {
                "description": "The property enumeration defines the types of bath that may be specified within the property set."
            },
            "DrainSize": {
                "description": "The size of the drain outlet connection from the object."
            },
            "HasGrabHandles": {
                "description": "Indicates whether the bath is fitted with handles that provide assistance to a bather in entering or leaving the bath."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_sanitaryterminaltypebath.htm"
    },
    "Pset_SanitaryTerminalTypeBidet": {
        "properties": {
            "DrainSize": {
                "description": "The size of the drain outlet connection from the object."
            },
            "Mounting": {
                "description": "The property enumeration Pset_SanitaryMountingEnum defines the forms of mounting or fixing of the sanitary terminal that may be specified within property sets used to define sanitary terminals (WC\u2019s, basins, sinks, etc.) where:-"
            },
            "SpilloverLevel": {
                "description": "The level at which water spills out of the object."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_sanitaryterminaltypebidet.htm"
    },
    "Pset_SanitaryTerminalTypeCistern": {
        "properties": {
            "CisternCapacity": {
                "description": "Volumetric capacity of the cistern"
            },
            "CisternHeight": {
                "description": "Enumeration that identifies the height of the cistern or, if set to 'None' if the urinal has no cistern and is flushed using mains or high pressure water through a flushing valve."
            },
            "FlushRate": {
                "description": "The minimum and maximum volume of water used at each flush. Where a single flush is used, the value of upper bound and lower bound should be equal. For a dual flush toilet, the lower bound should be used for the lesser flush rate and the upper bound for the greater flush rate. Where flush is achieved using mains pressure water through a flush valve, the value of upper and lower bound should be equal and should be the same as the flush rate property of the flush valve (see relevant valve property set). Alternatively, in this case, do not assert the flush rate property; refer to the flush rate of the flush valve."
            },
            "FlushType": {
                "description": "The property enumeration Pset_FlushTypeEnum defines the types of flushing mechanism that may be specified for cisterns and sanitary terminals where:-"
            },
            "IsAutomaticFlush": {
                "description": "Boolean value that determines if the cistern is flushed automatically either after each use or periodically (TRUE) or whether manual flushing is required (FALSE)."
            },
            "IsSingleFlush": {
                "description": "Indicates whether the cistern is single flush = TRUE (i.e. the same amount of water is used for each and every flush) or dual flush = FALSE (i.e. the amount of water used for a flush may be selected by the user to be high or low depending on the waste material to be removed)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_sanitaryterminaltypecistern.htm"
    },
    "Pset_SanitaryTerminalTypeCommon": {
        "properties": {
            "Color": {
                "description": "Color selection for this object."
            },
            "NominalDepth": {
                "description": "Nominal or quoted depth of the object."
            },
            "NominalLength": {
                "description": "Nominal or quoted length of the object."
            },
            "NominalWidth": {
                "description": "Nominal or quoted width of the object."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {}
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_sanitaryterminaltypecommon.htm"
    },
    "Pset_SanitaryTerminalTypeSanitaryFountain": {
        "properties": {
            "DrainSize": {
                "description": "The size of the drain outlet connection from the object."
            },
            "FountainType": {
                "description": "Selection of the type of fountain from the enumerated list of types where:-"
            },
            "Mounting": {
                "description": "Selection of the form of mounting of the fountain from the enumerated list of mountings where:-"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_sanitaryterminaltypesanitaryfountain.htm"
    },
    "Pset_SanitaryTerminalTypeShower": {
        "properties": {
            "DrainSize": {
                "description": "The size of the drain outlet connection from the object."
            },
            "HasTray": {
                "description": "Indicates whether the shower has a separate receptacle that catches the water in a shower and directs it to a waste outlet."
            },
            "ShowerHeadDescription": {
                "description": "A description of the shower head(s) that emit the spray of water."
            },
            "ShowerType": {
                "description": "Selection of the type of shower from the enumerated list of types where:-"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_sanitaryterminaltypeshower.htm"
    },
    "Pset_SanitaryTerminalTypeSink": {
        "properties": {
            "Color": {
                "description": "Color selection for this object."
            },
            "DrainSize": {
                "description": "The size of the drain outlet connection from the object."
            },
            "Mounting": {
                "description": "Selection of the form of mounting of the sink from the enumerated list of mountings where:-"
            },
            "MountingOffset": {
                "description": "For cunter top maounted sinks, the vertical offset between the top of the sink and the counter top."
            },
            "SinkType": {
                "description": "Selection of the type of sink from the enumerated list of types where:-"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_sanitaryterminaltypesink.htm"
    },
    "Pset_SanitaryTerminalTypeToiletPan": {
        "properties": {
            "PanMounting": {
                "description": "The property enumeration Pset_SanitaryMountingEnum defines the forms of mounting or fixing of the sanitary terminal that may be specified within property sets used to define sanitary terminals (WC\u2019s, basins, sinks, etc.) where:-"
            },
            "SpilloverLevel": {
                "description": "The level at which water spills out of the terminal."
            },
            "ToiletPanType": {
                "description": "The property enumeration Pset_ToiletPanTypeEnum defines the types of toilet pan that may be specified within the property set Pset_Toilet:-"
            },
            "ToiletType": {
                "description": "Enumeration that defines the types of toilet (water closet) arrangements that may be specified where:-"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_sanitaryterminaltypetoiletpan.htm"
    },
    "Pset_SanitaryTerminalTypeUrinal": {
        "properties": {
            "Mounting": {
                "description": "Selection of the form of mounting from the enumerated list of mountings where:-"
            },
            "SpilloverLevel": {
                "description": "The level at which water spills out of the object."
            },
            "UrinalType": {
                "description": "Selection of the type of urinal from the enumerated list of types where:-"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_sanitaryterminaltypeurinal.htm"
    },
    "Pset_SanitaryTerminalTypeWashHandBasin": {
        "properties": {
            "DrainSize": {
                "description": "The size of the drain outlet connection from the object."
            },
            "Mounting": {
                "description": "Selection of the form of mounting from the enumerated list of mountings where:-"
            },
            "MountingOffset": {
                "description": "For counter top mounted basins the vertical offset between the top of the sink and the counter top."
            },
            "WashHandBasinType": {
                "description": "Defines the types of wash hand basin that may be specified where:"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_sanitaryterminaltypewashhandbasin.htm"
    },
    "Pset_SensorPHistory": {
        "properties": {
            "Direction": {
                "description": "Indicates sensed direction for sensors capturing magnitude and direction measured from True North (0 degrees) in a clockwise direction."
            },
            "Quality": {
                "description": "Indicates the quality of measurement or failure condition, which may be further qualified by the Status.  True: measured values are considered reliable; False: measured values are considered not reliable (i.e. a fault has been detected); Unknown: reliability of values is uncertain."
            },
            "Status": {
                "description": "Indicates an error code or identifier, whose meaning is specific to the particular automation system.  Example values include: 'ConfigurationError', 'NotConnected', 'DeviceFailure', 'SensorFailure', 'LastKnown, 'CommunicationsFailure', 'OutOfService'."
            },
            "Value": {
                "description": "Indicates sensed values over time which may be recorded continuously or only when changed beyond a particular deadband.  The range of possible values is defined by the SetPoint property of the corresponding sensor type property set."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensorphistory.htm"
    },
    "Pset_SensorTypeCO2Sensor": {
        "properties": {
            "SetPointConcentration": {
                "description": "The carbon dioxide concentration to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypeco2sensor.htm"
    },
    "Pset_SensorTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypecommon.htm"
    },
    "Pset_SensorTypeConductanceSensor": {
        "properties": {
            "SetPointConductance": {
                "description": "The fill level value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypeconductancesensor.htm"
    },
    "Pset_SensorTypeContactSensor": {
        "properties": {
            "SetPointContact": {
                "description": "The contact value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypecontactsensor.htm"
    },
    "Pset_SensorTypeFireSensor": {
        "properties": {
            "AccuracyOfFireSensor": {
                "description": "The accuracy of the sensor."
            },
            "FireSensorSetPoint": {
                "description": "The temperature value to be sensed to indicate the presence of fire."
            },
            "TimeConstant": {
                "description": "The time constant of the sensor."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypefiresensor.htm"
    },
    "Pset_SensorTypeFlowSensor": {
        "properties": {
            "SetPointFlow": {
                "description": "The volumetric flow value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypeflowsensor.htm"
    },
    "Pset_SensorTypeFrostSensor": {
        "properties": {
            "SetPointFrost": {
                "description": "The detection of frost."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypefrostsensor.htm"
    },
    "Pset_SensorTypeGasSensor": {
        "properties": {
            "CoverageArea": {
                "description": "The floor area that is covered by the sensor (typically measured as a circle whose center is at the location of the sensor)."
            },
            "GasDetected": {
                "description": "Identification of the gas that is being detected, according to chemical formula.  For example, carbon monoxide is 'CO', carbon dioxide is 'CO2', oxygen is 'O2'."
            },
            "SetPointConcentration": {
                "description": "The gas concentration value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypegassensor.htm"
    },
    "Pset_SensorTypeHeatSensor": {
        "properties": {
            "CoverageArea": {
                "description": "The area that is covered by the sensor (typically measured as a circle whose center is at the location of the sensor)."
            },
            "RateOfTemperatureRise": {
                "description": "The rate of temperature rise that is to be sensed as being hazardous."
            },
            "SetPointTemperature": {
                "description": "The temperature value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypeheatsensor.htm"
    },
    "Pset_SensorTypeHumiditySensor": {
        "properties": {
            "SetPointHumidity": {
                "description": "The humidity value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypehumiditysensor.htm"
    },
    "Pset_SensorTypeIdentifierSensor": {
        "properties": {
            "SetPointIdentifier": {
                "description": "The detected tag value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypeidentifiersensor.htm"
    },
    "Pset_SensorTypeIonConcentrationSensor": {
        "properties": {
            "SetPointConcentration": {
                "description": "The ion concentration value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            },
            "SubstanceDetected": {
                "description": "Identification of the substance that is being detected according to chemical formula.  For example, calcium carbonate is 'CaCO3'"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypeionconcentrationsensor.htm"
    },
    "Pset_SensorTypeLevelSensor": {
        "properties": {
            "SetPointLevel": {
                "description": "The fill level value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypelevelsensor.htm"
    },
    "Pset_SensorTypeLightSensor": {
        "properties": {
            "SetPointIlluminance": {
                "description": "The illuminance value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypelightsensor.htm"
    },
    "Pset_SensorTypeMoistureSensor": {
        "properties": {
            "SetPointMoisture": {
                "description": "The moisture value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypemoisturesensor.htm"
    },
    "Pset_SensorTypeMovementSensor": {
        "properties": {
            "MovementSensingType": {
                "description": "Enumeration that identifies the type of movement sensing mechanism."
            },
            "SetPointMovement": {
                "description": "The movement to be sensed."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypemovementsensor.htm"
    },
    "Pset_SensorTypePHSensor": {
        "properties": {
            "SetPointPH": {
                "description": "The fill level value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypephsensor.htm"
    },
    "Pset_SensorTypePressureSensor": {
        "properties": {
            "IsSwitch": {
                "description": "Identifies if the sensor also functions as a switch at the set point (=TRUE) or not (= FALSE)."
            },
            "SetPointPressure": {
                "description": "The pressure value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypepressuresensor.htm"
    },
    "Pset_SensorTypeRadiationSensor": {
        "properties": {
            "SetPointRadiation": {
                "description": "The radiation power value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortyperadiationsensor.htm"
    },
    "Pset_SensorTypeRadioactivitySensor": {
        "properties": {
            "SetPointRadioactivity": {
                "description": "The radioactivity value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortyperadioactivitysensor.htm"
    },
    "Pset_SensorTypeSmokeSensor": {
        "properties": {
            "CoverageArea": {
                "description": "The floor area that is covered by the sensor (typically measured as a circle whose center is at the location of the sensor)."
            },
            "HasBuiltInAlarm": {
                "description": "Indicates whether the smoke sensor is included as an element within a smoke alarm/sensor unit (TRUE) or not (FALSE)."
            },
            "SetPointConcentration": {
                "description": "The smoke concentration value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypesmokesensor.htm"
    },
    "Pset_SensorTypeSoundSensor": {
        "properties": {
            "SetPointSound": {
                "description": "The sound pressure value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypesoundsensor.htm"
    },
    "Pset_SensorTypeTemperatureSensor": {
        "properties": {
            "SetPointTemperature": {
                "description": "The temperature value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            },
            "TemperatureSensorType": {
                "description": "Enumeration that Identifies the types of temperature sensor that can be specified."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypetemperaturesensor.htm"
    },
    "Pset_SensorTypeWindSensor": {
        "properties": {
            "SetPointSpeed": {
                "description": "The wind speed value to be sensed. Use IfcPropertyBoundedValue.SetPointValue to set the set point value."
            },
            "WindSensorType": {
                "description": "Enumeration that Identifies the types of wind sensors that can be specified."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_sensortypewindsensor.htm"
    },
    "Pset_ServiceLife": {
        "properties": {
            "MeanTimeBetweenFailure": {
                "description": "The average time duration between instances of failure of a product."
            },
            "ServiceLifeDuration": {
                "description": "The length or duration of a service life.  "
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_servicelife.htm"
    },
    "Pset_ServiceLifeFactors": {
        "properties": {
            "DesignLevel": {
                "description": "Adjustment of the service life resulting from the effect of design level employed."
            },
            "InUseConditions": {
                "description": "Adjustment of the service life resulting from the effect of the conditions in which components are operating."
            },
            "IndoorEnvironment": {
                "description": "Adjustment of the service life resulting from the effect of the indoor environment (where appropriate)."
            },
            "MaintenanceLevel": {
                "description": "Adjustment of the service life resulting from the effect of the level or degree of maintenance applied to dcomponents."
            },
            "OutdoorEnvironment": {
                "description": "Adjustment of the service life resulting from the effect of the outdoor environment (where appropriate)"
            },
            "QualityOfComponents": {
                "description": "Adjustment of the service life resulting from the effect of the quality of components used."
            },
            "WorkExecutionLevel": {
                "description": "Adjustment of the service life resulting from the effect of the quality of work executed."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_servicelifefactors.htm"
    },
    "Pset_ShadingDeviceCommon": {
        "properties": {
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "MechanicalOperated": {
                "description": "Indication whether the element is operated machanically (TRUE) or not, i.e. manually  (FALSE)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Roughness": {
                "description": "A measure of the vertical deviations of the surface."
            },
            "ShadingDeviceType": {
                "description": "Specifies the type of shading device."
            },
            "SolarReflectance": {
                "description": "(Rsol): The ratio of incident solar radiation that is reflected by a shading system (also named \u03c1e). Note the following equation Asol + Rsol + Tsol = 1"
            },
            "SolarTransmittance": {
                "description": "(Tsol): The ratio of incident solar radiation that directly passes through a shading system (also named \u03c4e). Note the following equation Asol + Rsol + Tsol = 1"
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "SurfaceColor": {
                "description": "The color of the surface."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of a material of a certain thickness for this element."
            },
            "VisibleLightReflectance": {
                "description": "Fraction of the visible light that is reflected by the glazing at normal incidence. It is a value without unit."
            },
            "VisibleLightTransmittance": {
                "description": "Fraction of the visible light that passes the shading system  at normal incidence. It is a value without unit."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_shadingdevicecommon.htm"
    },
    "Pset_ShadingDevicePHistory": {
        "properties": {
            "Azimuth": {
                "description": "The azimuth of the outward normal for the outward or upward facing surface."
            },
            "TiltAngle": {
                "description": "The angle of tilt defined in the plane perpendicular to the extrusion axis (X-Axis of the local placement). The angle shall be measured from the orientation of the Z-Axis in the local placement."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_shadingdevicephistory.htm"
    },
    "Pset_SiteCommon": {
        "properties": {
            "BuildableArea": {
                "description": "The area of site utilization expressed as a maximum value according to local building codes."
            },
            "BuildingHeightLimit": {
                "description": "Allowed maximum height of buildings on this site - according to local building codes."
            },
            "FloorAreaRatio": {
                "description": "The ratio of all floor areas to the buildable area as the maximum floor area utilization of the site as a maximum value according to local building codes."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'). Used to store the non-classification driven internal project type."
            },
            "SiteCoverageRatio": {
                "description": "The ratio of the utilization,  TotalArea / BuildableArea, expressed as a maximum value. The ratio value may be used to derive BuildableArea."
            },
            "TotalArea": {
                "description": "Total planned area for the site. Used for programming the site space."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_sitecommon.htm"
    },
    "Pset_SlabCommon": {
        "properties": {
            "AcousticRating": {
                "description": "Acoustic rating for this object. It is provided according to the national building code. It indicates the sound transmission resistance of this object by an index ratio (instead of providing full sound absorbtion values)."
            },
            "Combustible": {
                "description": "Indication whether the object is made from combustible material (TRUE) or not (FALSE)."
            },
            "Compartmentation": {
                "description": "Indication whether the object is designed to serve as a fire compartmentation (TRUE) or not (FALSE)."
            },
            "FireRating": {
                "description": "Fire rating for this object. It is given according to the national fire safety classification."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "LoadBearing": {
                "description": "Indicates whether the object is intended to carry loads (TRUE) or not (FALSE)."
            },
            "PitchAngle": {
                "description": "Angle of the slab to the horizontal when used as a component for the roof (specified as 0 degrees or not asserted for cases where the slab is not used as a roof component).      "
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "SurfaceSpreadOfFlame": {
                "description": "Indication on how the flames spread around the surface, It is given according to the national building code that governs the fire behaviour for materials."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of a material. Here the total thermal transmittance coefficient through the slab (including all materials)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_slabcommon.htm"
    },
    "Pset_SolarDeviceTypeCommon": {
        "properties": {
            "ActiveCellSurfaceAreaFraction": {
                "description": "The percentage of surface area containing active solar cells. Note: the surface area may be provided at Qto_SolarDeviceBaseQuantities.GrossArea."
            },
            "CellEfficiency": {
                "description": "The ratio of power generated divided by incident solar power."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_solardevicetypecommon.htm"
    },
    "Pset_SoundAttenuation": {
        "properties": {
            "SoundFrequency": {
                "description": "List of nominal sound frequencies, correlated to the SoundPressure time series values (IfcTimeSeries.ListValues)"
            },
            "SoundPressure": {
                "description": "A time series of sound pressure values measured in decibels at a reference pressure of 20 microPascals for the referenced octave band frequency.  Each value in IfcTimeSeries.ListValues is correlated to the sound frequency at the same position within SoundFrequencies."
            },
            "SoundScale": {
                "description": "The reference sound scale.  "
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_soundattenuation.htm"
    },
    "Pset_SoundGeneration": {
        "properties": {
            "SoundCurve": {
                "description": "Table of sound frequencies and sound power measured in decibels at a reference power of 1 picowatt(10\\^(-12) watt) for the referenced octave band frequency."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_soundgeneration.htm"
    },
    "Pset_SpaceCommon": {
        "properties": {
            "GrossPlannedArea": {
                "description": "Total planned gross area for the space. Used for programming the space."
            },
            "HandicapAccessible": {
                "description": "Indication whether this space (in case of e.g., a toilet) is designed to serve as an accessible space for handicapped people, e.g., for a public toilet (TRUE) or not (FALSE). This information is often used to declare the need for access for the disabled and for special design requirements of this space."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "NetPlannedArea": {
                "description": "Total planned net area for the space. Used for programming the space."
            },
            "PubliclyAccessible": {
                "description": "Indication whether this space (in case of e.g., a toilet) is designed to serve as a publicly accessible space, e.g., for a public toilet (TRUE) or not (FALSE)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'). Used to store the non-classification driven internal project type."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_spacecommon.htm"
    },
    "Pset_SpaceCoveringRequirements": {
        "properties": {
            "CeilingCovering": {
                "description": "Label to indicate the material or finish of the space flooring. The label is used for room book information and often displayed in room stamp."
            },
            "CeilingCoveringThickness": {
                "description": "Thickness of the material layer(s) for the space ceiling.  "
            },
            "ConcealedCeiling": {
                "description": "Indication whether this space is designed to have a concealed flooring space (TRUE) or not (FALSE). A concealed ceiling space is normally meant to be the space between a slab and a ceiling."
            },
            "ConcealedCeilingOffset": {
                "description": "Distance between the upper floor slab and the suspended ceiling, often used for distribution systems. Often referred to as plenum."
            },
            "ConcealedFlooring": {
                "description": "Indication whether this space is designed to have a concealed flooring space (TRUE) or not (FALSE). A concealed flooring space is normally meant to be the space beneath a raised floor."
            },
            "ConcealedFlooringOffset": {
                "description": "Distance between the floor slab and the floor covering, often used for cables and other installations. Often referred to as raised flooring."
            },
            "FloorCovering": {
                "description": "Label to indicate the material or finish of the space flooring. The label is used for room book information and often displayed in room stamp."
            },
            "FloorCoveringThickness": {
                "description": "Thickness of the material layer(s) for the space flooring.  "
            },
            "Molding": {
                "description": "Label to indicate the material or construction of the molding around the space ceiling. The label is used for room book information."
            },
            "MoldingHeight": {
                "description": "Height of the molding."
            },
            "SkirtingBoard": {
                "description": "Label to indicate the material or construction of the skirting board around the space flooring. The label is used for room book information."
            },
            "SkirtingBoardHeight": {
                "description": "Height of the skirting board."
            },
            "WallCovering": {
                "description": "Label to indicate the material or finish of the space flooring. The label is used for room book information and often displayed in room stamp."
            },
            "WallCoveringThickness": {
                "description": "Thickness of the material layer(s) for the space cladding.  "
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_spacecoveringrequirements.htm"
    },
    "Pset_SpaceFireSafetyRequirements": {
        "properties": {
            "AirPressurization": {
                "description": "Indication whether the space is required to have pressurized air (TRUE) or not (FALSE)."
            },
            "FireExit": {
                "description": "Indication whether this object is designed to serve as an exit in the case of fire (TRUE) or not (FALSE). Here whether the space (in case of e.g., a corridor) is designed to serve as an exit space, e.g., for fire escape purposes."
            },
            "FireRiskFactor": {
                "description": "Fire Risk factor assigned to the space according to local building regulations. It defines the fire risk of the space at several levels of fire hazard."
            },
            "FlammableStorage": {
                "description": "Indication whether the space is intended to serve as a storage of flammable material (which is regarded as such by the presiding building code. (TRUE) indicates yes, (FALSE) otherwise."
            },
            "SprinklerProtection": {
                "description": "Indication whether the space is sprinkler protected (TRUE) or not (FALSE)."
            },
            "SprinklerProtectionAutomatic": {
                "description": "Indication whether the space has an automatic sprinkler protection (TRUE) or not (FALSE). It should only be given, if the property \"SprinklerProtection\" is set to TRUE."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_spacefiresafetyrequirements.htm"
    },
    "Pset_SpaceHeaterPHistory": {
        "properties": {
            "AirResistanceCurve": {
                "description": "Air resistance curve (w/ fan only); Pressure = f ( flow rate)."
            },
            "AuxiliaryEnergySourceConsumption": {
                "description": "Auxiliary energy source consumption."
            },
            "Effectiveness": {
                "description": "Ratio of the real heat transfer rate to the maximum possible heat transfer rate."
            },
            "Exponent": {
                "description": "Characteristic exponent, slope of log(heat output) vs log (surface temperature minus environmental temperature)."
            },
            "FractionConvectiveHeatTransfer": {
                "description": "Fraction of the total heat transfer rate as the convective heat transfer."
            },
            "FractionRadiantHeatTransfer": {
                "description": "Fraction of the total heat transfer rate as the radiant heat transfer."
            },
            "HeatOutputRate": {
                "description": "Overall heat transfer rate."
            },
            "OutputCapacityCurve": {
                "description": "Partial output capacity curve (as a function of water temperature); Q = f (Twater)."
            },
            "SpaceAirTemperature": {
                "description": "Dry bulb temperature in the space."
            },
            "SpaceMeanRadiantTemperature": {
                "description": "Mean radiant temperature in the space."
            },
            "SurfaceTemperature": {
                "description": "Average surface temperature of the component."
            },
            "UACurve": {
                "description": "UA curve as function of ambient temperature and surface temperature; UA = f (Tambient, Tsurface)"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_spaceheaterphistory.htm"
    },
    "Pset_SpaceHeaterTypeCommon": {
        "properties": {
            "BodyMass": {
                "description": "Overall body mass of the heater."
            },
            "EnergySource": {
                "description": "Enumeration defining the energy source or fuel combusted to generate heat if applicable.  Note: hydronic heaters shall use UNSET; dual-use hydronic/electric heaters shall use ELECTRICITY."
            },
            "HeatTransferDimension": {
                "description": "Indicates how heat is transmitted according to the shape of the space heater."
            },
            "HeatTransferMedium": {
                "description": "Enumeration defining the heat transfer medium if applicable."
            },
            "NumberOfPanels": {
                "description": "Number of panels."
            },
            "NumberOfSections": {
                "description": "Number of vertical sections, measured in the direction of flow."
            },
            "OutputCapacity": {
                "description": "Total nominal heat output as listed by the manufacturer."
            },
            "PlacementType": {
                "description": "Indicates how the space heater is designed to be placed."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "TemperatureClassification": {
                "description": "Enumeration defining the temperature classification of the space heater surface temperature. low temperature - surface temperature is relatively low, usually heated by hot water or electricity. high temperature - surface temperature is relatively high, usually heated by gas or steam."
            },
            "ThermalEfficiency": {
                "description": "Overall Thermal Efficiency is defined as gross energy output of the heat transfer device divided by the energy input."
            },
            "ThermalMassHeatCapacity": {
                "description": "Product of component mass and specific heat."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_spaceheatertypecommon.htm"
    },
    "Pset_SpaceHeaterTypeConvector": {
        "properties": {
            "ConvectorType": {
                "description": "Indicates the type of convector, whether forced air (mechanically driven) or natural (gravity)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_spaceheatertypeconvector.htm"
    },
    "Pset_SpaceHeaterTypeRadiator": {
        "properties": {
            "RadiatorType": {
                "description": "Indicates the type of radiator."
            },
            "TubingLength": {
                "description": "Water tube length inside the component."
            },
            "WaterContent": {
                "description": "Weight of water content within the heater."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_spaceheatertyperadiator.htm"
    },
    "Pset_SpaceLightingRequirements": {
        "properties": {
            "ArtificialLighting": {
                "description": "Indication whether this space  requires artificial lighting (as natural lighting would be not sufficient). (TRUE) indicates yes (FALSE) otherwise."
            },
            "Illuminance": {
                "description": "Required average illuminance value for this space."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_spacelightingrequirements.htm"
    },
    "Pset_SpaceOccupancyRequirements": {
        "properties": {
            "AreaPerOccupant": {
                "description": "Design occupancy loading for this type of usage assigned to this space."
            },
            "IsOutlookDesirable": {
                "description": "An indication of whether the outlook is desirable (set TRUE) or not (set FALSE)"
            },
            "MinimumHeadroom": {
                "description": "Headroom required for the activity assigned to this space."
            },
            "OccupancyNumber": {
                "description": "Number of people required for the activity assigned to this space."
            },
            "OccupancyNumberPeak": {
                "description": "Maximal number of people required for the activity assigned to this space in peak time."
            },
            "OccupancyTimePerDay": {
                "description": "The amount of time during the day that the activity is required within this space."
            },
            "OccupancyType": {
                "description": "Occupancy type for this object. It is defined according to the presiding national building code."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_spaceoccupancyrequirements.htm"
    },
    "Pset_SpaceParking": {
        "properties": {
            "IsAisle": {
                "description": "Indicates that this parking zone is for accessing the parking units, i.e. an aisle (TRUE) and not a parking unit itself (FALSE)"
            },
            "IsOneWay": {
                "description": "Indicates whether the parking aisle is designed for oneway traffic (TRUE) or twoway traffic (FALSE). Should only be provided if the property IsAisle is set to TRUE."
            },
            "ParkingUnits": {
                "description": "Indicates the number of transporation units of the type specified by the property ParkingUse that may be accommodated within the space. Generally, this value should default to 1 unit. However, where the parking space is for motorcycles or bicycles, provision may be made for more than one unit in the space."
            },
            "ParkingUse": {
                "description": "Identifies the type of transporation for which the parking space is designed. Values are not predefined but might include car, compact car, motorcycle, bicycle, truck, bus etc."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_spaceparking.htm"
    },
    "Pset_SpaceThermalDesign": {
        "properties": {
            "BoundaryAreaHeatLoss": {
                "description": "Heat loss per unit area for the boundary object. This is a design input value for use in the absence of calculated load data."
            },
            "CeilingRAPlenum": {
                "description": "Ceiling plenum used for return air or not. TRUE = Yes, FALSE = No."
            },
            "CoolingDesignAirflow": {
                "description": "The air flowrate required during the peak cooling conditions."
            },
            "CoolingDryBulb": {
                "description": "Inside dry bulb temperature for cooling design."
            },
            "CoolingRelativeHumidity": {
                "description": "Inside relative humidity for cooling design."
            },
            "ExhaustAirFlowrate": {
                "description": "Design exhaust air flow rate for the space."
            },
            "HeatingDesignAirflow": {
                "description": "The air flowrate required during the peak heating conditions, but could also be determined by minimum ventilation requirement or minimum air change requirements."
            },
            "HeatingDryBulb": {
                "description": "Inside dry bulb temperature for heating design."
            },
            "HeatingRelativeHumidity": {
                "description": "Inside relative humidity for heating design."
            },
            "TotalHeatGain": {
                "description": "The total amount of heat or energy gained by the space at the time of the space's peak cooling conditions."
            },
            "TotalHeatLoss": {
                "description": "The total amount of heat or energy lost by the space at the time of the space's peak heating conditions."
            },
            "TotalSensibleHeatGain": {
                "description": "The total sensible heat or energy gained by the space during the peak cooling conditions."
            },
            "VentilationAirFlowrate": {
                "description": "Ventilation outside air requirement for the space."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_spacethermaldesign.htm"
    },
    "Pset_SpaceThermalLoad": {
        "properties": {
            "AirExchangeRate": {
                "description": "Loads from the air exchange rate."
            },
            "DryBulbTemperature": {
                "description": "Loads from the dry bulb temperature."
            },
            "EquipmentSensible": {
                "description": "Heat gains and losses from equipment."
            },
            "ExhaustAir": {
                "description": "Loads from exhaust air."
            },
            "InfiltrationSensible": {
                "description": "Heat gains and losses from infiltration."
            },
            "Lighting": {
                "description": "Lighting loads."
            },
            "People": {
                "description": "Heat gains and losses from people."
            },
            "RecirculatedAir": {
                "description": "Loads from recirculated air."
            },
            "RelativeHumidity": {
                "description": "Loads from the relative humidity."
            },
            "TotalLatentLoad": {
                "description": "Total energy added or removed from air that affects its humidity or concentration of water vapor.  If a value is less than zero (negative), then the thermal load is lost from the space. If a value is greater than zero (positive), then the thermal load is a gain to the space."
            },
            "TotalRadiantLoad": {
                "description": "Total electromagnetic energy added or removed by emission or absorption.  If a value is less than zero (negative), then the thermal load is lost from the space. If a value is greater than zero (positive), then the thermal load is a gain to the space."
            },
            "TotalSensibleLoad": {
                "description": "Total energy added or removed from air that affects its temperature.  If a value is less than zero (negative), then the thermal load is lost from the space. If a value is greater than zero (positive), then the thermal load is a gain to the space."
            },
            "VentilationIndoorAir": {
                "description": "Ventilation loads from indoor air."
            },
            "VentilationOutdoorAir": {
                "description": "Ventilation loads from outdoor air."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_spacethermalload.htm"
    },
    "Pset_SpaceThermalLoadPHistory": {
        "properties": {
            "AirExchangeRate": {
                "description": "Loads from the air exchange rate."
            },
            "DryBulbTemperature": {
                "description": "Loads from the dry bulb temperature."
            },
            "EquipmentSensible": {
                "description": "Heat gains and losses from equipment."
            },
            "ExhaustAir": {
                "description": "Loads from exhaust air."
            },
            "InfiltrationSensible": {
                "description": "Heat gains and losses from infiltration."
            },
            "Lighting": {
                "description": "Lighting loads."
            },
            "People": {
                "description": "Heat gains and losses from people."
            },
            "RecirculatedAir": {
                "description": "Loads from recirculated air."
            },
            "RelativeHumidity": {
                "description": "Loads from the relative humidity."
            },
            "TotalLatentLoad": {
                "description": "Total energy added or removed from air that affects its humidity or concentration of water vapor.  If a value is less than zero (negative), then the thermal load is lost from the space. If a value is greater than zero (positive), then the thermal load is a gain to the space."
            },
            "TotalRadiantLoad": {
                "description": "Total electromagnetic energy added or removed by emission or absorption.  If a value is less than zero (negative), then the thermal load is lost from the space. If a value is greater than zero (positive), then the thermal load is a gain to the space."
            },
            "TotalSensibleLoad": {
                "description": "Total energy added or removed from air that affects its temperature.  If a value is less than zero (negative), then the thermal load is lost from the space. If a value is greater than zero (positive), then the thermal load is a gain to the space."
            },
            "VentilationIndoorAir": {
                "description": "Ventilation loads from indoor air."
            },
            "VentilationOutdoorAir": {
                "description": "Ventilation loads from outdoor air."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_spacethermalloadphistory.htm"
    },
    "Pset_SpaceThermalPHistory": {
        "properties": {
            "CoolingAirFlowRate": {
                "description": "Cooling air flow rate in the space."
            },
            "ExhaustAirFlowRate": {
                "description": "Exhaust air flow rate in the space."
            },
            "HeatingAirFlowRate": {
                "description": "Heating air flow rate in the space."
            },
            "SpaceRelativeHumidity": {
                "description": "The relative humidity of the space."
            },
            "SpaceTemperature": {
                "description": "Temperature of the space."
            },
            "VentilationAirFlowRate": {
                "description": "Ventilation air flow rate in the space."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_spacethermalphistory.htm"
    },
    "Pset_SpaceThermalRequirements": {
        "properties": {
            "AirConditioning": {
                "description": "Indication whether this space requires air conditioning provided (TRUE) or not (FALSE)."
            },
            "AirConditioningCentral": {
                "description": "Indication whether the space  requires a central air conditioning provided (TRUE) or not (FALSE). It should only be given, if the property \"AirConditioning\" is set to TRUE."
            },
            "DiscontinuedHeating": {
                "description": "Indication whether discontinued heating is required/desirable from user/designer view point. (TRUE) if yes, (FALSE) otherwise."
            },
            "MechanicalVentilationRate": {
                "description": "Indication of the requirement of a particular mechanical air ventilation rate, given in air changes per hour."
            },
            "NaturalVentilation": {
                "description": "Indication whether the space is required to have natural ventilation (TRUE) or mechanical ventilation (FALSE)."
            },
            "NaturalVentilationRate": {
                "description": "Indication of the requirement of a particular natural air ventilation rate, given in air changes per hour."
            },
            "SpaceHumidity": {
                "description": "Humidity of the space or zone that is required from user/designer view point.  If no summer or winter space humidity requirements are given, it applies all year, otherwise for the intermediate period. Provide this property, if no humidity range (Min-Max) is available."
            },
            "SpaceHumidityMax": {
                "description": "Maximal permitted humidity of the space or zone that is required from user/designer view point.  If no summer or winter space humidity requirements are given, it applies all year, otherwise for the intermediate period."
            },
            "SpaceHumidityMin": {
                "description": "Minimal permitted humidity of the space or zone that is required from user/designer view point.  If no summer or winter space humidity requirements are given, it applies all year, otherwise for the intermediate period."
            },
            "SpaceHumiditySummer": {
                "description": "Humidity of the space or zone for the hot (summer) period, that is required from user/designer view point and provided as requirement for cooling."
            },
            "SpaceHumidityWinter": {
                "description": "Humidity of the space or zone for the cold (winter) period that is required from user/designer view point and provided as requirement for heating."
            },
            "SpaceTemperature": {
                "description": "Temperature of the space or zone, that is required from user/designer view point.  If no summer or winter space temperature requirements are given, it applies all year, otherwise for the intermediate period. Provide this value, if no temperatur range (Min-Max) is available."
            },
            "SpaceTemperatureMax": {
                "description": "Maximal temperature of the space or zone, that is required from user/designer view point.  If no summer or winter space temperature requirements are given, it applies all year, otherwise for the intermediate period."
            },
            "SpaceTemperatureMin": {
                "description": "Minimal temperature of the space or zone, that is required from user/designer view point. If no summer or winter space temperature requirements are given, it applies all year, otherwise for the intermediate period."
            },
            "SpaceTemperatureSummerMax": {
                "description": "Maximal temperature of the space or zone for the hot (summer) period, that is required from user/designer view point and provided as requirement for cooling."
            },
            "SpaceTemperatureSummerMin": {
                "description": "Minimal temperature of the space or zone for the hot (summer) period, that is required from user/designer view point and provided as requirement for cooling."
            },
            "SpaceTemperatureWinterMax": {
                "description": "Maximal temperature of the space or zone for the cold (winter) period, that is required from user/designer view point and provided as requirement for heating."
            },
            "SpaceTemperatureWinterMin": {
                "description": "Minimal temperature of the space or zone for the cold (winter) period, that is required from user/designer view point and provided as requirement for heating."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_spacethermalrequirements.htm"
    },
    "Pset_SpatialZoneCommon": {
        "properties": {
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external zone at the outside of the building."
            },
            "Reference": {}
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_spatialzonecommon.htm"
    },
    "Pset_StackTerminalTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_stackterminaltypecommon.htm"
    },
    "Pset_StairCommon": {
        "properties": {
            "FireExit": {
                "description": "Indication whether this object is designed to serve as an exit in the case of fire (TRUE) or not (FALSE). Here it defines an exit stair in accordance to the national building code."
            },
            "FireRating": {
                "description": "Fire rating for this object. It is given according to the national fire safety classification."
            },
            "HandicapAccessible": {
                "description": "Indication that this object is designed to be accessible by the handicapped.  Set to (TRUE) if this stair is rated as handicap accessible  according the local building codes, otherwise (FALSE). Accessibility maybe provided by additional means."
            },
            "HasNonSkidSurface": {
                "description": "Indication whether the surface finish is designed to prevent slippery (TRUE) or not (FALSE)."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "LoadBearing": {},
            "NosingLength": {
                "description": "Horizontal distance from the front of the tread to the riser underneath. It is the overhang of the tread."
            },
            "NumberOfRiser": {
                "description": "Total number of the risers included in the stair."
            },
            "NumberOfTreads": {
                "description": "Total number of treads included in the stair."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "RequiredHeadroom": {
                "description": "Required headroom clearance for the passageway according to the applicable building code or additional requirements."
            },
            "RiserHeight": {
                "description": "Vertical distance from tread to tread.  The riser height is supposed to be equal for all steps of a stair or stair flight."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "ThermalTransmittance": {},
            "TreadLength": {
                "description": "Horizontal distance from the front of the thread to the front of the next tread.  The tread length is supposed to be equal for all steps of the stair or stair flight at the walking line."
            },
            "TreadLengthAtInnerSide": {
                "description": "Minimum length of treads at the inner side of the winder.  Only relevant in case of winding flights, for straight flights it is identical with IfcStairFlight.TreadLength. It is a pre-calculated value, in case of inconsistencies, the value derived from the shape representation shall take precedence."
            },
            "TreadLengthAtOffset": {
                "description": "Length of treads at a given offset. Walking line position is given by the 'WalkingLineOffset'. The resulting value should normally be identical with TreadLength, it may be given in addition, if the walking line offset for building code calculations is different from that used in design."
            },
            "WaistThickness": {
                "description": "Minimum thickness of the stair flight, measured perpendicular to the slope of the flight to the inner corner of riser and tread. It is a pre-calculated value, in case of inconsistencies, the value derived from the shape representation shall take precedence."
            },
            "WalkingLineOffset": {
                "description": "Offset of the walking line from the inner side of the flight.  Note: the walking line may have a own shape representation (in case of inconsistencies, the value derived from the shape representation shall take precedence)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_staircommon.htm"
    },
    "Pset_StairFlightCommon": {
        "properties": {
            "Headroom": {
                "description": "Actual headroom clearance for the passageway according to the current design.  The shape information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the shape properties, provided in the attached property, the geometric parameters take precedence."
            },
            "NosingLength": {
                "description": "Horizontal distance from the front of the tread to the riser underneath. It is the overhang of the tread."
            },
            "NumberOfRiser": {
                "description": "Total number of the risers included in the stair flight."
            },
            "NumberOfTreads": {
                "description": "Total number of treads included in the stair flight."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "RiserHeight": {
                "description": "Vertical distance from tread to tread.  The riser height is supposed to be equal for all steps of a stair or stair flight."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "TreadLength": {
                "description": "Horizontal distance from the front of the thread to the front of the next tread.  The tread length is supposed to be equal for all steps of the stair or stair flight at the walking line."
            },
            "TreadLengthAtInnerSide": {
                "description": "Minimum length of treads at the inner side of the winder.  Only relevant in case of winding flights, for straight flights it is identical with IfcStairFlight.TreadLength. It is a pre-calculated value, in case of inconsistencies, the value derived from the shape representation shall take precedence."
            },
            "TreadLengthAtOffset": {
                "description": "Length of treads at a given offset. Walking line position is given by the 'WalkingLineOffset'. The resulting value should normally be identical with TreadLength, it may be given in addition, if the walking line offset for building code calculations is different from that used in design."
            },
            "WaistThickness": {
                "description": "Minimum thickness of the stair flight, measured perpendicular to the slope of the flight to the inner corner of riser and tread. It is a pre-calculated value, in case of inconsistencies, the value derived from the shape representation shall take precedence."
            },
            "WalkingLineOffset": {
                "description": "Offset of the walking line from the inner side of the flight.  Note: the walking line may have a own shape representation (in case of inconsistencies, the value derived from the shape representation shall take precedence)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_stairflightcommon.htm"
    },
    "Pset_StructuralSurfaceMemberVaryingThickness": {
        "properties": {
            "Location1Global": {
                "description": "Global X,Y,Z coordinates of the point in which Thickness1 is given"
            },
            "Location1Local": {
                "description": "Local x,y coordinates of the point in which Thickness1 is given"
            },
            "Location2Global": {
                "description": "Global X,Y,Z coordinates of the point in which Thickness2 is given"
            },
            "Location2Local": {
                "description": "Local x,y coordinates of the point in which Thickness2 is given"
            },
            "Location3Global": {
                "description": "Global X,Y,Z coordinates of the point in which Thickness3 is given"
            },
            "Location3Local": {
                "description": "Local x,y coordinates of the point in which Thickness3 is given"
            },
            "Thickness1": {
                "description": "First thickness parameter of a surface member with varying thickness"
            },
            "Thickness2": {
                "description": "Second thickness parameter of a surface member with varying thickness"
            },
            "Thickness3": {
                "description": "Third thickness parameter of a surface member with varying thickness"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralanalysisdomain/pset/pset_structuralsurfacemembervaryingthickness.htm"
    },
    "Pset_SwitchingDeviceTypeCommon": {
        "properties": {
            "HasLock": {
                "description": "Indication of whether a switching device has a key operated lock (=TRUE) or not (= FALSE)."
            },
            "IsIlluminated": {
                "description": "An indication of whether there is an illuminated indicator to show that the switch is on (=TRUE) or not (= FALSE)."
            },
            "Legend": {
                "description": "A text inscribed or applied to the switch as a legend to indicate purpose or function."
            },
            "NumberOfGangs": {
                "description": "Number of gangs/buttons on this switch."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "SetPoint": {
                "description": "Indicates the setpoint and label.  For toggle switches, there are two positions, 0 for off and 1 for on.  For dimmer switches, the values may indicate the fully-off and full-on positions, where missing integer values in between are interpolated.   For selector switches, the range indicates the available positions. An IfcTable may be attached (using IfcMetric and IfcPropertyConstraintRelationship) containing columns of the specified header names and types: 'Position' (IfcInteger): The discrete setpoint level. 'Sink' (IfcLabel): The Name of the switched input port (IfcDistributionPort with FlowDirection=SINK). 'Source' (IfcLabel): The Name of the switched output port (IfcDistributionPort with FlowDirection=SOURCE). 'Ratio' (IfcNormalizedRatioMeasure): The ratio of power at the setpoint where 0.0 is off and 1.0 is fully on."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "SwitchFunction": {
                "description": "Indicates types of switches which differs in functionality."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_switchingdevicetypecommon.htm"
    },
    "Pset_SwitchingDeviceTypeContactor": {
        "properties": {
            "ContactorType": {
                "description": "A list of the available types of contactor from which that required may be selected where:"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_switchingdevicetypecontactor.htm"
    },
    "Pset_SwitchingDeviceTypeDimmerSwitch": {
        "properties": {
            "DimmerType": {
                "description": "A list of the available types of dimmer switch from which that required may be selected."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_switchingdevicetypedimmerswitch.htm"
    },
    "Pset_SwitchingDeviceTypeEmergencyStop": {
        "properties": {
            "SwitchOperation": {
                "description": "Indicates operation of emergency stop switch."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_switchingdevicetypeemergencystop.htm"
    },
    "Pset_SwitchingDeviceTypeKeypad": {
        "properties": {
            "KeypadType": {
                "description": "A list of the available types of keypad switch from which that required may be selected."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_switchingdevicetypekeypad.htm"
    },
    "Pset_SwitchingDeviceTypeMomentarySwitch": {
        "properties": {
            "MomentaryType": {
                "description": "A list of the available types of momentary switch from which that required may be selected."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_switchingdevicetypemomentaryswitch.htm"
    },
    "Pset_SwitchingDeviceTypePHistory": {
        "properties": {
            "SetPoint": {
                "description": "Indicates the switch position over time according to Pset_SwitchingDeviceTypeCommon.SetPoint."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_switchingdevicetypephistory.htm"
    },
    "Pset_SwitchingDeviceTypeSelectorSwitch": {
        "properties": {
            "SelectorType": {
                "description": "A list of the available types of selector switch from which that required may be selected."
            },
            "SwitchActivation": {
                "description": "A list of the available activations for selector switches from which that required may be selected."
            },
            "SwitchUsage": {
                "description": "A list of the available usages for selector switches from which that required may be selected."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_switchingdevicetypeselectorswitch.htm"
    },
    "Pset_SwitchingDeviceTypeStarter": {
        "properties": {
            "StarterType": {
                "description": "A list of the available types of starter from which that required may be selected where:"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_switchingdevicetypestarter.htm"
    },
    "Pset_SwitchingDeviceTypeSwitchDisconnector": {
        "properties": {
            "LoadDisconnectionType": {
                "description": "A list of the available types of load disconnection from which that required may be selected."
            },
            "SwitchDisconnectorType": {
                "description": "A list of the available types of switch disconnector from which that required may be selected where:"
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_switchingdevicetypeswitchdisconnector.htm"
    },
    "Pset_SwitchingDeviceTypeToggleSwitch": {
        "properties": {
            "SwitchActivation": {
                "description": "A list of the available activations for toggle switches from which that required may be selected."
            },
            "SwitchUsage": {
                "description": "A list of the available usages for toggle switches from which that required may be selected."
            },
            "ToggleSwitchType": {
                "description": "A list of the available types of toggle switch from which that required may be selected."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_switchingdevicetypetoggleswitch.htm"
    },
    "Pset_SystemFurnitureElementTypeCommon": {
        "properties": {
            "Finishing": {
                "description": "The finishing applied to system furniture elements of this type e.g. walnut, fabric."
            },
            "GroupCode": {
                "description": "e.g. panels, worksurfaces, storage, etc."
            },
            "IsUsed": {
                "description": "Indicates whether the element is being used in a workstation (= TRUE) or not.(= FALSE)."
            },
            "NominalHeight": {
                "description": "The nominal height of the system furniture elements of this type. The size information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the size properties, provided in the attached property set, the geometric parameters take precedence."
            },
            "NominalWidth": {
                "description": "The nominal width of the system furniture elements of this type. The size information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the size properties, provided in the attached property set, the geometric parameters take precedence."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_systemfurnitureelementtypecommon.htm"
    },
    "Pset_SystemFurnitureElementTypePanel": {
        "properties": {
            "FurniturePanelType": {
                "description": "Available panel types from which that required may be selected."
            },
            "HasOpening": {
                "description": "indicates whether the panel has an opening (= TRUE) or not (= FALSE)."
            },
            "NominalThickness": {
                "description": "The nominal thickness of the panel."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_systemfurnitureelementtypepanel.htm"
    },
    "Pset_SystemFurnitureElementTypeWorkSurface": {
        "properties": {
            "HangingHeight": {
                "description": "The hanging height of the worksurface."
            },
            "NominalThickness": {
                "description": "The nominal thickness of the work surface."
            },
            "ShapeDescription": {
                "description": "A description of the shape of the work surface e.g. corner square, rectangle, etc."
            },
            "SupportType": {
                "description": "Available support types from which that required may be selected."
            },
            "UsePurpose": {
                "description": "The principal purpose for which the work surface is intended to be used e.g. writing/reading, computer, meeting, printer, reference files, etc."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_systemfurnitureelementtypeworksurface.htm"
    },
    "Pset_TankOccurrence": {
        "properties": {
            "HasLadder": {
                "description": "Indication of whether the tank is provided with a ladder (set TRUE) for access to the top. If no ladder is provided then value is set FALSE."
            },
            "HasVisualIndicator": {
                "description": "Indication of whether the tank is provided with a visual indicator (set TRUE) that shows the water level in the tank. If no visual indicator is provided then value is set FALSE."
            },
            "TankComposition": {
                "description": "Defines the level of element composition where."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_tankoccurrence.htm"
    },
    "Pset_TankPHistory": {
        "properties": {
            "Level": {
                "description": "The level of the tank as a fraction of its available capacity."
            },
            "Pressure": {
                "description": "The pressure of the substance in the tank."
            },
            "Temperature": {
                "description": "The temperature of the substance in the tank."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_tankphistory.htm"
    },
    "Pset_TankTypeCommon": {
        "properties": {
            "AccessType": {
                "description": "Defines the types of access (or cover) to a tank that may be specified."
            },
            "EffectiveCapacity": {
                "description": "The total effective or actual volumetric capacity of the tank."
            },
            "EndShapeType": {
                "description": "Defines the types of end shapes that can be used for preformed tanks. The convention for reading these enumerated values is that for a vertical cylinder, the first value is the base and the second is the top; for a horizontal cylinder, the order of reading should be left to right. For a speherical tank, the value UNSET should be used."
            },
            "FirstCurvatureRadius": {
                "description": "FirstCurvatureRadius should be defined as the base or left side radius of curvature value."
            },
            "NominalCapacity": {
                "description": "The total nominal or design volumetric capacity of the tank."
            },
            "NominalDepth": {
                "description": "The nominal depth of the tank."
            },
            "NominalLengthOrDiameter": {
                "description": "The nominal length or, in the case of a vertical cylindrical tank, the nominal diameter of the tank."
            },
            "NominalWidthOrDiameter": {
                "description": "The nominal width or, in the case of a horizontal cylindrical tank, the nominal diameter of the tank."
            },
            "NumberOfSections": {
                "description": "Number of sections used in the construction of the tank. Default is 1."
            },
            "OperatingWeight": {
                "description": "Operating weight of the tank including all of its contents."
            },
            "PatternType": {
                "description": "Defines the types of pattern (or shape of a tank that may be specified."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "SecondCurvatureRadius": {
                "description": "SecondCurvatureRadius should be defined as the top or right side radius of curvature value."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "StorageType": {
                "description": "Defines the general material category intended to be stored."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_tanktypecommon.htm"
    },
    "Pset_TankTypeExpansion": {
        "properties": {
            "ChargePressure": {
                "description": "Nominal or design operating pressure of the tank."
            },
            "PressureRegulatorSetting": {
                "description": "Pressure that is automatically maintained in the tank."
            },
            "ReliefValveSetting": {
                "description": "Pressure at which the relief valve activates."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_tanktypeexpansion.htm"
    },
    "Pset_TankTypePreformed": {
        "properties": {
            "EndShapeType": {
                "description": "Defines the types of end shapes that can be used for preformed tanks. The convention for reading these enumerated values is that for a vertical cylinder, the first value is the base and the second is the top; for a horizontal cylinder, the order of reading should be left to right. For a speherical tank, the value UNSET should be used."
            },
            "FirstCurvatureRadius": {
                "description": "FirstCurvatureRadius should be defined as the base or left side radius of curvature value."
            },
            "PatternType": {
                "description": "Defines the types of pattern (or shape of a tank that may be specified."
            },
            "SecondCurvatureRadius": {
                "description": "SecondCurvatureRadius should be defined as the top or right side radius of curvature value."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_tanktypepreformed.htm"
    },
    "Pset_TankTypePressureVessel": {
        "properties": {
            "ChargePressure": {
                "description": "Nominal or design operating pressure of the tank."
            },
            "PressureRegulatorSetting": {
                "description": "Pressure that is automatically maintained in the tank."
            },
            "ReliefValveSetting": {
                "description": "Pressure at which the relief valve activates."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_tanktypepressurevessel.htm"
    },
    "Pset_TankTypeSectional": {
        "properties": {
            "NumberOfSections": {
                "description": "Number of sections used in the construction of the tank"
            },
            "SectionLength": {
                "description": "The length of a section used in the construction of the tank."
            },
            "SectionWidth": {
                "description": "The width of a section used in the construction of the tank."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_tanktypesectional.htm"
    },
    "Pset_TendonAnchorCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_tendonanchorcommon.htm"
    },
    "Pset_TendonCommon": {
        "properties": {
            "NominalDiameter": {
                "description": "The nominal diameter defining the cross-section size of the prestressed part of the tendon."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "SheathDiameter": {
                "description": "Diameter of the sheeth (duct) around the tendon, if there is one with this type of tendon."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/pset/pset_tendoncommon.htm"
    },
    "Pset_ThermalLoadAggregate": {
        "properties": {
            "ApplianceDiversity": {
                "description": "Diversity of appliance load."
            },
            "InfiltrationDiversitySummer": {
                "description": "Diversity factor for Summer infiltration."
            },
            "InfiltrationDiversityWinter": {
                "description": "Diversity factor for Winter infiltration."
            },
            "LightingDiversity": {
                "description": "Lighting diversity."
            },
            "LoadSafetyFactor": {
                "description": "Load safety factor."
            },
            "TotalCoolingLoad": {
                "description": "The peak total cooling load for the building, zone or space."
            },
            "TotalHeatingLoad": {
                "description": "The peak total heating load for the building, zone or space."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_thermalloadaggregate.htm"
    },
    "Pset_ThermalLoadDesignCriteria": {
        "properties": {
            "AppliancePercentLoadToRadiant": {
                "description": "Percent of sensible load to radiant heat."
            },
            "LightingLoadIntensity": {
                "description": "Average lighting load intensity in the space per unit area (PowerMeasure/IfcAreaMeasure)."
            },
            "LightingPercentLoadToReturnAir": {
                "description": "Percent of lighting load to the return air plenum."
            },
            "OccupancyDiversity": {
                "description": "Diversity factor that may be applied to the number of people in the space."
            },
            "OutsideAirPerPerson": {
                "description": "Design quantity of outside air to be provided per person in the space."
            },
            "ReceptacleLoadIntensity": {
                "description": "Average power use intensity of appliances and other non-HVAC equipment in the space per unit area.(PowerMeasure/IfcAreaMeasure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_thermalloaddesigncriteria.htm"
    },
    "Pset_TransformerTypeCommon": {
        "properties": {
            "EfficiencyCurve": {
                "description": "The ratio of power transformed according to fractional load, where the first value indicates the load percentage and the second value indicates the efficiency of power transformation."
            },
            "ImaginaryImpedanceRatio": {
                "description": "The ratio between the imaginary part of the zero sequence impedance and the imaginary part of the positive impedance (i.e. imaginary part of the short-circuit voltage) of the transformer. Used for three-phase transformer which includes a N-conductor."
            },
            "IsNeutralPrimaryTerminalAvailable": {
                "description": "An indication of whether the neutral point of the primary winding is available as a terminal (=TRUE) or not (= FALSE)."
            },
            "IsNeutralSecondaryTerminalAvailable": {
                "description": "An indication of whether the neutral point of the secondary winding is available as a terminal (=TRUE) or not (= FALSE)."
            },
            "MaximumApparentPower": {
                "description": "Maximum apparent power/capacity in VA (volt ampere)."
            },
            "PrimaryApparentPower": {
                "description": "The power in VA (volt ampere) that has been transformed and that runs into the transformer on the primary side."
            },
            "PrimaryCurrent": {
                "description": "The current that is going to be transformed and that runs into the transformer on the primary side."
            },
            "PrimaryFrequency": {
                "description": "The frequency that is going to be transformed and that runs into the transformer on the primary side."
            },
            "PrimaryVoltage": {
                "description": "The voltage that is going to be transformed and that runs into the transformer on the primary side."
            },
            "RadiativeFraction": {
                "description": "The fraction of energy converted to heat."
            },
            "RealImpedanceRatio": {
                "description": "The ratio between the real part of the zero sequence impedance and the real part of the positive impedance (i.e. real part of the short-circuit voltage) of the transformer. Used for three-phase transformer which includes a N-conductor."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "SecondaryApparentPower": {
                "description": "The power in VA (volt ampere) that has been transformed and is running out of the transformer on the secondary side."
            },
            "SecondaryCurrent": {
                "description": "The current that has been transformed and is running out of the transformer on the secondary side."
            },
            "SecondaryCurrentType": {
                "description": "A list of the secondary current types that can result from transformer output."
            },
            "SecondaryFrequency": {
                "description": "The frequency that has been transformed and is running out of the transformer on the secondary side."
            },
            "SecondaryVoltage": {
                "description": "The voltage that has been transformed and is running out of the transformer on the secondary side."
            },
            "ShortCircuitVoltage": {
                "description": "A complex number that specifies the real and imaginary parts of the short-circuit voltage at rated current of a transformer given in %."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "TransformerVectorGroup": {
                "description": "List of the possible vector groups for the transformer from which that required may be set. Values in the enumeration list follow a standard international code where the first letter  describes how the primary windings are connected, the second letter describes how the secondary windings are connected, and the numbers describe the rotation of voltages and currents from the primary to the secondary side in multiples of 30 degrees."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/pset/pset_transformertypecommon.htm"
    },
    "Pset_TransportElementCommon": {
        "properties": {
            "CapacityPeople": {
                "description": "Capacity of the transportation element measured in numbers of person."
            },
            "CapacityWeight": {
                "description": "Capacity of the transport element measured by weight."
            },
            "FireExit": {
                "description": "Indication whether this object is designed to serve as an exit in the case of fire (TRUE) or not (FALSE). Here whether the transport element (in case of e.g., a lift) is designed to serve as a fire exit, e.g., for fire escape purposes."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'). Used to store the non-classification driven internal construction type."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_transportelementcommon.htm"
    },
    "Pset_TransportElementElevator": {
        "properties": {
            "ClearDepth": {
                "description": "Clear depth of the object (elevator). It indicates the distance from the inner surface of the elevator door to the opposite surface of the elevator car.  The shape information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the shape properties, provided in the attached property, the geometric parameters take precedence."
            },
            "ClearHeight": {
                "description": "Clear height of the object (elevator). The shape information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the shape properties, provided in the attached property, the geometric parameters take precedence."
            },
            "ClearWidth": {
                "description": "Clear width of the object (elevator). It indicates the distance from the inner surfaces of the elevator car left and right from the elevator door.  The shape information is provided in addition to the shape representation and the geometric parameters used within. In cases of inconsistency between the geometric parameters and the shape properties, provided in the attached property, the geometric parameters take precedence."
            },
            "FireFightingLift": {
                "description": "Indication whether the elevator is designed to serve as a fire fighting lift the case of fire (TRUE) or not (FALSE). A fire fighting lift is used by fire fighters to access the location of fire and to evacuate people."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_transportelementelevator.htm"
    },
    "Pset_TubeBundleTypeCommon": {
        "properties": {
            "FoulingFactor": {
                "description": "Fouling factor of the tubes in the tube bundle."
            },
            "HasTurbulator": {
                "description": "TRUE if the tube has a turbulator, FALSE if it does not."
            },
            "HorizontalSpacing": {
                "description": "Horizontal spacing between tubes in the tube bundle."
            },
            "InLineRowSpacing": {
                "description": "In-line tube row spacing."
            },
            "InsideDiameter": {
                "description": "Actual inner diameter of the tube in the tube bundle."
            },
            "Length": {
                "description": "Length of the tubes in the tube bundle."
            },
            "NominalDiameter": {
                "description": "Nominal diameter or width of the tubes in the tube bundle."
            },
            "NumberOfCircuits": {
                "description": "Number of parallel fluid tube circuits."
            },
            "NumberOfRows": {
                "description": "Number of tube rows in the tube bundle assembly."
            },
            "OutsideDiameter": {
                "description": "Actual outside diameter of the tube in the tube bundle."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "StaggeredRowSpacing": {
                "description": "Staggered tube row spacing."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "ThermalConductivity": {
                "description": "The thermal conductivity of the tube."
            },
            "VerticalSpacing": {
                "description": "Vertical spacing between tubes in the tube bundle."
            },
            "Volume": {
                "description": "Total volume of fluid in the tubes and their headers."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_tubebundletypecommon.htm"
    },
    "Pset_TubeBundleTypeFinned": {
        "properties": {
            "Diameter": {
                "description": "Actual diameter of a fin for circular fins only."
            },
            "FinCorrugatedType": {
                "description": "Description of a fin corrugated type."
            },
            "HasCoating": {
                "description": "TRUE if the fin has a coating, FALSE if it does not."
            },
            "Height": {
                "description": "Length of the fin as measured perpendicular to the direction of airflow."
            },
            "Length": {
                "description": "Length of the fin as measured parallel to the direction of airflow."
            },
            "Spacing": {
                "description": "Distance between fins on a tube in the tube bundle."
            },
            "ThermalConductivity": {
                "description": "The thermal conductivity of the fin."
            },
            "Thickness": {
                "description": "Thickness of the fin."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_tubebundletypefinned.htm"
    },
    "Pset_UnitaryControlElementPHistory": {
        "properties": {
            "Fan": {
                "description": "Indicates fan operation where True is on, False is off, and Unknown is automatic."
            },
            "Mode": {
                "description": "Indicates operation mode corresponding to Pset_UnitaryControlTypeCommon.Mode.  For example, 'HEAT', 'COOL', 'AUTO'."
            },
            "SetPoint": {
                "description": "Indicates the temperature setpoint.  For thermostats with setbacks or separate high and low setpoints, then the time series may contain a pair of values at each entry where the first value is the heating setpoint (low) and the second value is the cooling setpoint (high)."
            },
            "Temperature": {
                "description": "Indicates the current measured temperature."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_unitarycontrolelementphistory.htm"
    },
    "Pset_UnitaryControlElementTypeCommon": {
        "properties": {
            "Mode": {
                "description": "Table mapping operation mode identifiers to descriptive labels, which may be used for interpreting Pset_UnitaryControlElementPHistory.Mode."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_unitarycontrolelementtypecommon.htm"
    },
    "Pset_UnitaryControlElementTypeIndicatorPanel": {
        "properties": {
            "Application": {
                "description": "The application of the unitary control element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_unitarycontrolelementtypeindicatorpanel.htm"
    },
    "Pset_UnitaryControlElementTypeThermostat": {
        "properties": {
            "TemperatureSetPoint": {
                "description": "The temperature setpoint range and default setpoint."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/pset/pset_unitarycontrolelementtypethermostat.htm"
    },
    "Pset_UnitaryEquipmentTypeAirConditioningUnit": {
        "properties": {
            "CondenserEnteringTemperature": {
                "description": "Temperature of fluid entering condenser."
            },
            "CondenserFlowrate": {
                "description": "Flow rate of fluid through the condenser."
            },
            "CondenserLeavingTemperature": {
                "description": "Termperature of fluid leaving condenser."
            },
            "CoolingEfficiency": {
                "description": "Coefficient of Performance: Ratio of cooling energy output to energy input under full load operating conditions."
            },
            "HeatingCapacity": {
                "description": "Heating capacity."
            },
            "HeatingEfficiency": {
                "description": "Heating efficiency under full load heating conditions."
            },
            "LatentCoolingCapacity": {
                "description": "Latent cooling capacity."
            },
            "OutsideAirFlowrate": {
                "description": "Flow rate of outside air entering the unit."
            },
            "SensibleCoolingCapacity": {
                "description": "Sensible cooling capacity."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_unitaryequipmenttypeairconditioningunit.htm"
    },
    "Pset_UnitaryEquipmentTypeAirHandler": {
        "properties": {
            "AirHandlerConstruction": {
                "description": "Enumeration defining how the air handler might be fabricated."
            },
            "AirHandlerFanCoilArrangement": {
                "description": "Enumeration defining the arrangement of the supply air fan and the cooling coil."
            },
            "DualDeck": {
                "description": "Does the AirHandler have a dual deck? TRUE = Yes, FALSE = No."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_unitaryequipmenttypeairhandler.htm"
    },
    "Pset_UnitaryEquipmentTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_unitaryequipmenttypecommon.htm"
    },
    "Pset_UtilityConsumptionPHistory": {
        "properties": {
            "Electricity": {
                "description": "The amount of electricity consumed during the period specified in the time series."
            },
            "Fuel": {
                "description": "The amount of fuel consumed during the period specified in the time series."
            },
            "Heat": {
                "description": "The amount of heat energy consumed during the period specified in the time series."
            },
            "Steam": {
                "description": "The amount of steam consumed during the period specified in the time series."
            },
            "Water": {
                "description": "The amount of water consumed during the period specified in the time series."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/pset/pset_utilityconsumptionphistory.htm"
    },
    "Pset_ValvePHistory": {
        "properties": {
            "MeasuredFlowRate": {
                "description": "The rate of flow of a fluid measured across the valve."
            },
            "MeasuredPressureDrop": {
                "description": "The actual pressure drop in the fluid measured across the valve."
            },
            "PercentageOpen": {
                "description": "The ratio between the amount that the valve is open to the full open position of the valve."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_valvephistory.htm"
    },
    "Pset_ValveTypeAirRelease": {
        "properties": {
            "IsAutomatic": {
                "description": "Indication of whether the valve is automatically operated (TRUE) or manually operated (FALSE)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_valvetypeairrelease.htm"
    },
    "Pset_ValveTypeCommon": {
        "properties": {
            "CloseOffRating": {
                "description": "Close off rating."
            },
            "FlowCoefficient": {
                "description": "Flow coefficient (the quantity of fluid that passes through a fully open valve at unit pressure drop), typically expressed as the Kv or Cv value for the valve."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Size": {
                "description": "The size of the connection to the valve (or to each connection for faucets, mixing valves, etc.)."
            },
            "Status": {},
            "TestPressure": {
                "description": "The maximum pressure to which the valve has been subjected under test."
            },
            "ValveMechanism": {
                "description": "The mechanism by which the valve function is achieved where:"
            },
            "ValveOperation": {
                "description": "The method of valve operation where:"
            },
            "ValvePattern": {
                "description": "The configuration of the ports of a valve according to either the linear route taken by a fluid flowing through the valve or by the number of ports where:"
            },
            "WorkingPressure": {
                "description": "The normally expected maximum working pressure of the valve."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_valvetypecommon.htm"
    },
    "Pset_ValveTypeDrawOffCock": {
        "properties": {
            "HasHoseUnion": {
                "description": "Indicates whether the drawoff cock is fitted with a hose union connection (= TRUE) or not (= FALSE)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_valvetypedrawoffcock.htm"
    },
    "Pset_ValveTypeFaucet": {
        "properties": {
            "FaucetFunction": {
                "description": "Defines the operating temperature of a faucet that may be specified."
            },
            "FaucetOperation": {
                "description": "Defines the range of ways in which a faucet can be operated that may be specified where:"
            },
            "FaucetTopDescription": {
                "description": "Description of the operating mechanism/top of the faucet."
            },
            "FaucetType": {
                "description": "Defines the range of faucet types that may be specified where:"
            },
            "Finish": {
                "description": "Description of the finish applied to the faucet."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_valvetypefaucet.htm"
    },
    "Pset_ValveTypeFlushing": {
        "properties": {
            "FlushingRate": {
                "description": "The predetermined quantity of water to be flushed."
            },
            "HasIntegralShutOffDevice": {
                "description": "Indication of whether the flushing valve has an integral shut off device fitted (set TRUE) or not (set FALSE)."
            },
            "IsHighPressure": {
                "description": "Indication of whether the flushing valve is suitable for use on a high pressure water main (set TRUE) or not (set FALSE)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_valvetypeflushing.htm"
    },
    "Pset_ValveTypeGasTap": {
        "properties": {
            "HasHoseUnion": {
                "description": "Indicates whether the gas tap is fitted with a hose union connection (= TRUE) or not (= FALSE)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_valvetypegastap.htm"
    },
    "Pset_ValveTypeIsolating": {
        "properties": {
            "IsNormallyOpen": {
                "description": "If TRUE, the valve is normally open. If FALSE is is normally closed."
            },
            "IsolatingPurpose": {
                "description": "Defines the purpose for which the isolating valve is used since the way in which the valve is identified as an isolating valve may be in the context of its use. Note that unless there is a contextual name for the isolating valve (as in the case of a Landing Valve on a rising fire main), then the value assigned shoulkd be UNSET."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_valvetypeisolating.htm"
    },
    "Pset_ValveTypeMixing": {
        "properties": {
            "MixerControl": {
                "description": "Defines the form of control of the mixing valve."
            },
            "OutletConnectionSize": {
                "description": "The size of the pipework connection from the mixing valve."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_valvetypemixing.htm"
    },
    "Pset_ValveTypePressureReducing": {
        "properties": {
            "DownstreamPressure": {
                "description": "The operating pressure of the fluid downstream of the pressure reducing valve."
            },
            "UpstreamPressure": {
                "description": "The operating pressure of the fluid upstream of the pressure reducing valve."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_valvetypepressurereducing.htm"
    },
    "Pset_ValveTypePressureRelief": {
        "properties": {
            "ReliefPressure": {
                "description": "The pressure at which the spring or weight in the valve is set to discharge fluid."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_valvetypepressurerelief.htm"
    },
    "Pset_VibrationIsolatorTypeCommon": {
        "properties": {
            "IsolatorCompressibility": {
                "description": "The compressibility of the vibration isolator."
            },
            "IsolatorStaticDeflection": {
                "description": "Static deflection of the vibration isolator."
            },
            "MaximumSupportedWeight": {
                "description": "The maximum weight that can be carried by the vibration isolator."
            },
            "NominalHeight": {
                "description": "Height of the vibration isolator before the application of load."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1')."
            },
            "Status": {},
            "VibrationTransmissibility": {
                "description": "The vibration transmissibility percentage."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/pset/pset_vibrationisolatortypecommon.htm"
    },
    "Pset_WallCommon": {
        "properties": {
            "AcousticRating": {
                "description": "Acoustic rating for this object. It is provided according to the national building code. It indicates the sound transmission resistance of this object by an index ratio (instead of providing full sound absorbtion values)."
            },
            "Combustible": {
                "description": "Indication whether the object is made from combustible material (TRUE) or not (FALSE)."
            },
            "Compartmentation": {
                "description": "Indication whether the object is designed to serve as a fire compartmentation (TRUE) or not (FALSE)."
            },
            "ExtendToStructure": {
                "description": "Indicates whether the object extend to the structure above (TRUE) or not (FALSE)."
            },
            "FireRating": {
                "description": "Fire rating given according to the national fire safety classification."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "LoadBearing": {
                "description": "Indicates whether the object is intended to carry loads (TRUE) or not (FALSE)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "SurfaceSpreadOfFlame": {
                "description": "Indication on how the flames spread around the surface, It is given according to the national building code that governs the fire behaviour for materials."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of a material. Here the total thermal transmittance coefficient through the wall (including all materials)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_wallcommon.htm"
    },
    "Pset_Warranty": {
        "properties": {
            "Exclusions": {
                "description": "Items, conditions or actions that may be excluded from the warranty or that may cause the warranty to become void."
            },
            "IsExtendedWarranty": {
                "description": "Indication of whether this is an extended warranty whose duration is greater than that normally assigned to an artefact (=TRUE) or not (= FALSE)."
            },
            "PointOfContact": {
                "description": "The organization that should be contacted for action under the terms of the warranty. Note that the role of the organization (manufacturer, supplier, installer etc.) is determined by the IfcActorRole attribute of IfcOrganization."
            },
            "WarrantyContent": {
                "description": "The content of the warranty."
            },
            "WarrantyEndDate": {
                "description": "The date on which the warranty expires."
            },
            "WarrantyIdentifier": {
                "description": "The identifier assigned to a warranty."
            },
            "WarrantyPeriod": {
                "description": "The time duration during which a manufacturer or supplier guarantees or warrants the performance of an artefact."
            },
            "WarrantyStartDate": {
                "description": "The date on which the warranty commences."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedfacilitieselements/pset/pset_warranty.htm"
    },
    "Pset_WasteTerminalTypeCommon": {
        "properties": {
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), provided, if there is no classification reference to a recognized classification system used."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_wasteterminaltypecommon.htm"
    },
    "Pset_WasteTerminalTypeFloorTrap": {
        "properties": {
            "CoverLength": {
                "description": "The length measured along the x-axis in the local coordinate system or the radius (in the case of a circular shape in plan) of the cover of the trap."
            },
            "CoverMaterial": {
                "description": "Material from which the cover or grating is constructed."
            },
            "CoverWidth": {
                "description": "The length measured along the y-axis in the local coordinate system of the cover of the  trap."
            },
            "HasStrainer": {
                "description": "Indicates whether the gully trap has a strainer (= TRUE) or not (= FALSE)."
            },
            "InletConnectionSize": {
                "description": "Size of the inlet connection(s), where used, of the inlet connections."
            },
            "InletPatternType": {
                "description": "Identifies the pattern of inlet connections to a trap."
            },
            "IsForSullageWater": {
                "description": "Indicates if the purpose of the floor trap is to receive sullage water, or if that is amongst its purposes (= TRUE), or not (= FALSE). Note that if TRUE, it is expected that an upstand or kerb will be placed around the floor trap to prevent the ingress of surface water runoff; the provision of the upstand or kerb is not dealt with in this property set."
            },
            "NominalBodyDepth": {
                "description": "Nominal or quoted length measured along the z-axis in the local coordinate system of the chamber of the  trap."
            },
            "NominalBodyLength": {
                "description": "Nominal or quoted length measured along the x-axis in the local coordinate system or the radius (in the case of a circular shape in plan) of the chamber of the trap."
            },
            "NominalBodyWidth": {
                "description": "Nominal or quoted length measured along the y-axis in the local coordinate system of the chamber of the trap."
            },
            "OutletConnectionSize": {
                "description": "Size of the outlet connection from the object."
            },
            "SpilloverLevel": {
                "description": "The level at which water spills out of the terminal."
            },
            "TrapType": {
                "description": "Identifies the predefined types of waste trap used in combination with the floor trap from which the type required may be set."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_wasteterminaltypefloortrap.htm"
    },
    "Pset_WasteTerminalTypeFloorWaste": {
        "properties": {
            "CoverLength": {
                "description": "The length measured along the x-axis in the local coordinate system or the radius (in the case of a circular shape in plan) of the cover of the waste."
            },
            "CoverWidth": {
                "description": "The length measured along the y-axis in the local coordinate system of the cover of the  waste."
            },
            "NominalBodyDepth": {
                "description": "Nominal or quoted length measured along the z-axis in the local coordinate system of the waste."
            },
            "NominalBodyLength": {
                "description": "Nominal or quoted length measured along the x-axis in the local coordinate system or the radius (in the case of a circular shape in plan) of the waste."
            },
            "NominalBodyWidth": {
                "description": "Nominal or quoted length measured along the y-axis in the local coordinate system of the waste."
            },
            "OutletConnectionSize": {
                "description": "Size of the outlet connection from the object."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_wasteterminaltypefloorwaste.htm"
    },
    "Pset_WasteTerminalTypeGullySump": {
        "properties": {
            "BackInletPatternType": {
                "description": "Identifies the pattern of inlet connections to a gully trap."
            },
            "CoverLength": {
                "description": "The length measured along the x-axis in the local coordinate system or the radius (in the case of a circular shape in plan) of the cover of the gully trap."
            },
            "CoverWidth": {
                "description": "The length measured along the y-axis in the local coordinate system of the cover of the gully trap."
            },
            "GullyType": {
                "description": "Identifies the predefined types of gully from which the type required may be set."
            },
            "InletConnectionSize": {
                "description": "Size of the inlet connection(s), where used, of the inlet connections."
            },
            "NominalSumpDepth": {
                "description": "Nominal or quoted length measured along the z-axis in the local coordinate system of the sump."
            },
            "NominalSumpLength": {
                "description": "Nominal or quoted length measured along the x-axis in the local coordinate system or the radius (in the case of a circular shape in plan) of the sump."
            },
            "NominalSumpWidth": {
                "description": "Nominal or quoted length measured along the y-axis in the local coordinate system of the sump."
            },
            "OutletConnectionSize": {
                "description": "Size of the outlet connection from the object."
            },
            "TrapType": {
                "description": "Identifies the predefined types of trap from which the type required may be set."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_wasteterminaltypegullysump.htm"
    },
    "Pset_WasteTerminalTypeGullyTrap": {
        "properties": {
            "BackInletPatternType": {
                "description": "Identifies the pattern of inlet connections to a gully trap."
            },
            "CoverLength": {
                "description": "The length measured along the x-axis in the local coordinate system or the radius (in the case of a circular shape in plan) of the cover of the gully trap."
            },
            "CoverWidth": {
                "description": "The length measured along the y-axis in the local coordinate system of the cover of the gully trap."
            },
            "GullyType": {
                "description": "Identifies the predefined types of gully from which the type required may be set."
            },
            "HasStrainer": {
                "description": "Indicates whether the gully trap has a strainer (= TRUE) or not (= FALSE)."
            },
            "InletConnectionSize": {
                "description": "Size of the inlet connection(s), where used, of the inlet connections."
            },
            "NominalBodyDepth": {
                "description": "Nominal or quoted length measured along the z-axis in the local coordinate system of the chamber of the gully trap."
            },
            "NominalBodyLength": {
                "description": "Nominal or quoted length measured along the x-axis in the local coordinate system or the radius (in the case of a circular shape in plan) of the chamber of the gully trap."
            },
            "NominalBodyWidth": {
                "description": "Nominal or quoted length measured along the y-axis in the local coordinate system of the chamber of the gully trap."
            },
            "OutletConnectionSize": {
                "description": "Size of the outlet connection from the object."
            },
            "TrapType": {
                "description": "Identifies the predefined types of trap from which the type required may be set."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_wasteterminaltypegullytrap.htm"
    },
    "Pset_WasteTerminalTypeRoofDrain": {
        "properties": {
            "CoverLength": {
                "description": "The length measured along the x-axis in the local coordinate system or the radius (in the case of a circular shape in plan) of the cover of the drain."
            },
            "CoverWidth": {
                "description": "The length measured along the y-axis in the local coordinate system of the cover of the  drain."
            },
            "NominalBodyDepth": {
                "description": "Nominal or quoted length measured along the z-axis in the local coordinate system of the drain."
            },
            "NominalBodyLength": {
                "description": "Nominal or quoted length measured along the x-axis in the local coordinate system or the radius (in the case of a circular shape in plan) of the drain."
            },
            "NominalBodyWidth": {
                "description": "Nominal or quoted length measured along the y-axis in the local coordinate system of the drain."
            },
            "OutletConnectionSize": {
                "description": "Size of the outlet connection from the object."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_wasteterminaltyperoofdrain.htm"
    },
    "Pset_WasteTerminalTypeWasteDisposalUnit": {
        "properties": {
            "DrainConnectionSize": {
                "description": "Size of the drain connection inlet to the waste disposal unit."
            },
            "NominalDepth": {
                "description": "Nominal or quoted depth of the object measured from the inlet drain connection to the base of the unit."
            },
            "OutletConnectionSize": {
                "description": "Size of the outlet connection from the waste disposal unit."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_wasteterminaltypewastedisposalunit.htm"
    },
    "Pset_WasteTerminalTypeWasteTrap": {
        "properties": {
            "InletConnectionSize": {
                "description": "Size of the inlet connection(s), where used, of the inlet connections."
            },
            "OutletConnectionSize": {
                "description": "Size of the outlet connection from the object."
            },
            "WasteTrapType": {
                "description": "Identifies the predefined types of trap from which the type required may be set."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/pset/pset_wasteterminaltypewastetrap.htm"
    },
    "Pset_WindowCommon": {
        "properties": {
            "AcousticRating": {
                "description": "Acoustic rating for this object. It is provided according to the national building code. It indicates the sound transmission resistance of this object by an index ratio (instead of providing full sound absorbtion values)."
            },
            "FireExit": {
                "description": "Indication whether this object is designed to serve as an exit in the case of fire (TRUE) or not (FALSE). Here it defines an exit window in accordance to the national building code."
            },
            "FireRating": {
                "description": "Fire rating for this object. It is given according to the national fire safety classification."
            },
            "GlazingAreaFraction": {
                "description": "Fraction of the glazing area relative to the total area of the filling element.  It shall be used, if the glazing area is not given separately for all panels within the filling element."
            },
            "HasDrive": {
                "description": "Indication whether this object has an automatic drive to operate it (TRUE) or no drive (FALSE)"
            },
            "HasSillExternal": {
                "description": "Indication whether the window opening has an external sill (TRUE) or not (FALSE)."
            },
            "HasSillInternal": {
                "description": "Indication whether the window opening has an internal sill (TRUE) or not (FALSE)."
            },
            "Infiltration": {
                "description": "Infiltration flowrate of outside air for the filler object based on the area of the filler object at a pressure level of 50 Pascals. It shall be used, if the length of all joints is unknown."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building."
            },
            "MechanicalLoadRating": {
                "description": "Mechanical load rating for this object. It is provided according to the national building code."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as \"construction type\". It should be provided as an alternative to the name of the \"object type\", if the software does not support object types."
            },
            "SecurityRating": {
                "description": "Index based rating system indicating security level. It is giving according to the national building code."
            },
            "SmokeStop": {
                "description": "Indication whether the object is designed to provide a smoke stop (TRUE) or not (FALSE)."
            },
            "Status": {
                "description": "Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as \"New\" - element designed as new addition, \"Existing\" - element exists and remains, \"Demolish\" - element existed but is to be demolished,  \"Temporary\" - element will exists only temporary (like a temporary support structure)."
            },
            "ThermalTransmittance": {
                "description": "Thermal transmittance coefficient (U-Value) of a material. It applies to the total door construction."
            },
            "WaterTightnessRating": {
                "description": "Water tightness rating for this object. It is provided according to the national building code."
            },
            "WindLoadRating": {
                "description": "Wind load resistance rating for this object. It is provided according to the national building code."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/pset/pset_windowcommon.htm"
    },
    "Pset_WorkControlCommon": {
        "properties": {
            "WorkDayDuration": {
                "description": "The elapsed time within a worktime-based day. For presentation purposes, applications may choose to display IfcTask durations in work days where IfcTaskTime.DurationType=WORKTIME. This value must be less than or equal to 24 hours (an elapsed day); if omitted then 8 hours is assumed."
            },
            "WorkFinishTime": {
                "description": "The default time of day a task is scheduled to finish. For presentation purposes, if the finish time of a task matches the WorkFinishTime, then applications may choose to display the date only. Conversely when entering dates without specifying time, applications may automatically append the WorkFinishTime."
            },
            "WorkMonthDuration": {
                "description": "The elapsed time within a worktime-based month. For presentation purposes, applications may choose to display IfcTask durations in work months where IfcTaskTime.DurationType=WORKTIME. This value must be less than or equal to 744 hours (an elapsed month of 31 days); if omitted then 160 hours is assumed."
            },
            "WorkStartTime": {
                "description": "The default time of day a task is scheduled to start. For presentation purposes, if the start time of a task matches the WorkStartTime, then applications may choose to display the date only. Conversely when entering dates without specifying time, applications may automatically append the WorkStartTime."
            },
            "WorkWeekDuration": {
                "description": "The elapsed time within a worktime-based week. For presentation purposes, applications may choose to display IfcTask durations in work weeks where IfcTaskTime.DurationType=WORKTIME. This value must be less than or equal to 168 hours (an elapsed week); if omitted then 40 hours is assumed."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcprocessextension/pset/pset_workcontrolcommon.htm"
    },
    "Pset_ZoneCommon": {
        "properties": {
            "GrossPlannedArea": {
                "description": "Total planned gross area for the zone. Used for programming the zone."
            },
            "HandicapAccessible": {
                "description": "Indication whether this space (in case of e.g., a toilet) is designed to serve as an accessible space for handicapped people, e.g., for a public toilet (TRUE) or not (FALSE). This information is often used to declare the need for access for the disabled and for special design requirements of this space."
            },
            "IsExternal": {
                "description": "Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external zone at the outside of the building."
            },
            "NetPlannedArea": {
                "description": "Total planned net area for the zone. Used for programming the zone."
            },
            "PubliclyAccessible": {
                "description": "Indication whether this space (in case of e.g., a toilet) is designed to serve as a publicly accessible space, e.g., for a public toilet (TRUE) or not (FALSE)."
            },
            "Reference": {
                "description": "Reference ID for this specified type in this project (e.g. type 'A-1'). Used to store the non-classification driven internal project type."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/pset/pset_zonecommon.htm"
    },
    "Qto_ActuatorBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/qset/qto_actuatorbasequantities.htm"
    },
    "Qto_AirTerminalBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            },
            "Perimeter": {
                "description": "Perimeter of the air terminal face plate."
            },
            "TotalSurfaceArea": {
                "description": "Gross area of the air terminal face plate."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_airterminalbasequantities.htm"
    },
    "Qto_AirTerminalBoxTypeBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_airterminalboxtypebasequantities.htm"
    },
    "Qto_AirToAirHeatRecoveryBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_airtoairheatrecoverybasequantities.htm"
    },
    "Qto_AlarmBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/qset/qto_alarmbasequantities.htm"
    },
    "Qto_AudioVisualApplianceBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_audiovisualappliancebasequantities.htm"
    },
    "Qto_BeamBaseQuantities": {
        "properties": {
            "CrossSectionArea": {
                "description": "Total area of the cross section (or profile) of the beam."
            },
            "GrossSurfaceArea": {
                "description": "Total area of the beam, normally generated as perimeter * length + 2 * cross section area. It is the sum of OuterSurfaceArea + (2 x CrossSectionArea) and shall only be given, if the OuterSurfaceArea and CrossSectionArea cannot be established separately."
            },
            "GrossVolume": {
                "description": "Total gross volume of the beam, not taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "GrossWeight": {
                "description": "Total gross weight of the beam without add-on parts, not taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "Length": {
                "description": "Total length of the beam, not taking into account any cut-out's or other processing features."
            },
            "NetSurfaceArea": {
                "description": "Net surface area of the beam, normally generated as perimeter * length + 2 * cross section area taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "NetVolume": {
                "description": "Total net volume of the beam, taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "NetWeight": {
                "description": "Total net weight of the beam without add-on parts, taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "OuterSurfaceArea": {
                "description": "Total area of the extruded surfaces of the beam (not taking into account the end cap areas), normally generated as perimeter * length."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_beambasequantities.htm"
    },
    "Qto_BoilerBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element, not including contained fluid."
            },
            "NetWeight": {
                "description": "Weight of the element, including contained fluid as designed."
            },
            "TotalSurfaceArea": {
                "description": "Total surface area of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_boilerbasequantities.htm"
    },
    "Qto_BuildingBaseQuantities": {
        "properties": {
            "EavesHeight": {
                "description": "Standard net height of this storey, from the top surface of the construction floor, to the bottom surface of the construction floor or roof above. Only provided is there is a constant height."
            },
            "FootprintArea": {
                "description": "Gross area of the site covered by the building(s)."
            },
            "GrossFloorArea": {
                "description": "Sum of all gross areas of spaces within the building. It includes the area of construction elements within the building. May be provided in addition to the quantities of the spaces and the construction elements assigend to the building. In case of inconsistencies, the individual quantities of spaces and construction elements take precedence."
            },
            "GrossVolume": {
                "description": "Sum of all gross volumes of spaces enclosed by the building. It includes the volumes of construction elements within the building. May be provided in addition to the quantities of the spaces and the construction elements assigend to the building. In case of inconsistencies, the individual quantities of spaces and construction elements take precedence."
            },
            "Height": {
                "description": "Standard gross height of this building, from the top surface of the construction floor, to the top surface of the construction floor or roof above. Only provided is there is a constant height."
            },
            "NetFloorArea": {
                "description": "Sum of all net areas of spaces within the building. It excludes the area of construction elements within the building. May be provided in addition to the quantities of the spaces assigend to the building. In case of inconsistencies, the individual quantities of spaces take precedence."
            },
            "NetVolume": {
                "description": "Sum of all net volumes of spaces enclosed by the building. It iexcludes the volumes of construction elements within the building. May be provided in addition to the quantities of the spaces assigend to the building. In case of inconsistencies, the individual quantities of spaces take precedence."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/qset/qto_buildingbasequantities.htm"
    },
    "Qto_BuildingElementProxyQuantities": {
        "properties": {
            "NetSurfaceArea": {},
            "NetVolume": {}
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_buildingelementproxyquantities.htm"
    },
    "Qto_BuildingStoreyBaseQuantities": {
        "properties": {
            "GrossFloorArea": {
                "description": "Sum of all gross areas of spaces within the building storey. It includes the area of construction elements within the building storey. May be provided in addition to the quantities of the spaces and the construction elements assigend to the storey. In case of inconsistencies, the individual quantities of spaces and construction elements take precedence."
            },
            "GrossHeight": {
                "description": "Standard gross height of this storey, from the top surface of the construction floor, to the top surface of the construction floor or roof above. Only provided is there is a constant height."
            },
            "GrossPerimeter": {
                "description": "Perimeter of the outer contour of the building story without taking interior slab openings into account."
            },
            "GrossVolume": {
                "description": "Sum of all gross volumes of spaces enclosed by the building storey. It includes the volumes of construction elements within the building storey. May be provided in addition to the quantities of the spaces and the construction elements assigend to the storey. In case of inconsistencies, the individual quantities of spaces and construction elements take precedence."
            },
            "NetFloorArea": {
                "description": "Sum of all net areas of spaces within the building storey. It excludes the area of construction elements within the building storey. May be provided in addition to the quantities of the spaces assigend to the storey. In case of inconsistencies, the individual quantities of spaces take precedence."
            },
            "NetHeigtht": {
                "description": "Standard net height of this storey, from the top surface of the construction floor, to the bottom surface of the construction floor or roof above. Only provided is there is a constant height."
            },
            "NetVolume": {
                "description": "Sum of all net volumes of spaces enclosed by the building storey. It iexcludes the volumes of construction elements within the building storey. May be provided in addition to the quantities of the spaces assigend to the storey. In case of inconsistencies, the individual quantities of spaces take precedence."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/qset/qto_buildingstoreybasequantities.htm"
    },
    "Qto_BurnerBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_burnerbasequantities.htm"
    },
    "Qto_CableCarrierFittingBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_cablecarrierfittingbasequantities.htm"
    },
    "Qto_CableCarrierSegmentBaseQuantities": {
        "properties": {
            "CrossSectionArea": {
                "description": "Area of the cross section."
            },
            "GrossWeight": {
                "description": "Weight of the element."
            },
            "Length": {
                "description": "Length of the segment, calculated at midpoint of cross-section, equal to the distance between inlet and outlet ports."
            },
            "OuterSurfaceArea": {
                "description": "Total surface area."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_cablecarriersegmentbasequantities.htm"
    },
    "Qto_CableFittingBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_cablefittingbasequantities.htm"
    },
    "Qto_CableSegmentBaseQuantities": {
        "properties": {
            "CrossSectionArea": {
                "description": "Area of the cross section."
            },
            "GrossWeight": {
                "description": "Weight of the element."
            },
            "Length": {
                "description": "Length of the segment, calculated at midpoint of cross-section, equal to the distance between inlet and outlet ports."
            },
            "OuterSurfaceArea": {
                "description": "Total surface area of the cable."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_cablesegmentbasequantities.htm"
    },
    "Qto_ChillerBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_chillerbasequantities.htm"
    },
    "Qto_ChimneyBaseQuantities": {
        "properties": {
            "Length": {
                "description": "Total length of the chimney from the foundation (or beginning) to the top not taking into account any cut-out's or other processing features."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_chimneybasequantities.htm"
    },
    "Qto_CoilBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_coilbasequantities.htm"
    },
    "Qto_ColumnBaseQuantities": {
        "properties": {
            "CrossSectionArea": {
                "description": "Total area of the cross section (or profile) of the column."
            },
            "GrossSurfaceArea": {
                "description": "Total area of the column, normally generated as perimeter * length + 2 * cross section area. It is the sum of OuterSurfaceArea + (2 x CrossSectionArea) and shall only be given, if the OuterSurfaceArea and CrossSectionArea cannot be established separately."
            },
            "GrossVolume": {
                "description": "Total gross volume of the column, not taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "GrossWeight": {
                "description": "Total gross weight of the column without add-on parts, not taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "Length": {
                "description": "Total length of the column not taking into account any cut-out's or other processing features."
            },
            "NetSurfaceArea": {
                "description": "Net surface area of the column, normally generated as perimeter * length + 2 * cross section area taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "NetVolume": {
                "description": "Total net volume of the column, taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "NetWeight": {
                "description": "Total net weight of the column without add-on parts, taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "OuterSurfaceArea": {
                "description": "Total area of the extruded surfaces of the column (not taking into account the end cap areas), normally generated as perimeter * length."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_columnbasequantities.htm"
    },
    "Qto_CommunicationsApplianceBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_communicationsappliancebasequantities.htm"
    },
    "Qto_CompressorBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_compressorbasequantities.htm"
    },
    "Qto_CondenserBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_condenserbasequantities.htm"
    },
    "Qto_ConstructionEquipmentResourceBaseQuantities": {
        "properties": {
            "OperatingTime": {
                "description": "Productive time using the equipment including operating time and excluding idle time."
            },
            "UsageTime": {
                "description": "Total time using the equipment including operating time and idle time."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcconstructionmgmtdomain/qset/qto_constructionequipmentresourcebasequantities.htm"
    },
    "Qto_ConstructionMaterialResourceBaseQuantities": {
        "properties": {
            "GrossVolume": {
                "description": "Total gross volume of the material, including material placed and wasted."
            },
            "GrossWeight": {
                "description": "Total gross weight of the material, including material placed and wasted."
            },
            "NetVolume": {
                "description": "Total net volume of the material, including material placed but excluding material wasted."
            },
            "NetWeight": {
                "description": "Total net weight of the material, including material placed but excluding material wasted."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcconstructionmgmtdomain/qset/qto_constructionmaterialresourcebasequantities.htm"
    },
    "Qto_ControllerBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/qset/qto_controllerbasequantities.htm"
    },
    "Qto_CooledBeamBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_cooledbeambasequantities.htm"
    },
    "Qto_CoolingTowerBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_coolingtowerbasequantities.htm"
    },
    "Qto_CoveringBaseQuantities": {
        "properties": {
            "GrossArea": {
                "description": "Sum of all gross areas of the covering facing the space. No opening that is included in the covering is subtracted."
            },
            "NetArea": {
                "description": "Sum of all net areas  of the covering facing the space. All openings that is included in the covering are subtracted."
            },
            "Width": {
                "description": "Nominal width (or thickness) of the plate. Only given, if the covering is prismatic (constant thickess)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_coveringbasequantities.htm"
    },
    "Qto_CurtainWallQuantities": {
        "properties": {
            "GrossSideArea": {
                "description": "Area of the curtain wall as viewed by an elevation view of the middle plane of the curtain wall.  It does not take into account any curtain wall modifications."
            },
            "Height": {
                "description": "Total height of the curtain wall. It should only be provided, if it is constant along the curtain wall path."
            },
            "Length": {
                "description": "Total length of the curtain wall along the cutain wall center line (even if different to the curtain wall path)."
            },
            "NetSideArea": {
                "description": "Area of the curtain wall as viewed by an elevation view of the middle plane of the curtain wall. It does take into account all curtain wall modifications."
            },
            "Width": {
                "description": "Thickness of the curtain wall. It should only be provided, if it is constant along the curtain wall path."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_curtainwallquantities.htm"
    },
    "Qto_DamperBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_damperbasequantities.htm"
    },
    "Qto_DistributionChamberElementBaseQuantities": {
        "properties": {
            "GrossSurfaceArea": {
                "description": "Total gross area of the inner surface of the chamber, not taking into account openings such as for pipes, ducts, or cables."
            },
            "GrossVolume": {
                "description": "Total gross volume of the chamber, not taking into account any enclosed elements such as pipes, ducts, cables, or equipment."
            },
            "NetSurfaceArea": {
                "description": "Total net area of the inner surface of the chamber, subtracting any openings such as for pipes, ducts, or cables."
            },
            "NetVolume": {
                "description": "Total net volume of the chamber, subtracting any enclosed elements such as pipes, ducts, cables, or equipment."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgserviceelements/qset/qto_distributionchamberelementbasequantities.htm"
    },
    "Qto_DoorBaseQuantities": {
        "properties": {
            "Area": {
                "description": "Total area of the outer lining of the door."
            },
            "Height": {
                "description": "Total outer heigth of the door lining. It should only be provided, if it is a rectangular door."
            },
            "Perimeter": {
                "description": "Total perimeter of the outer lining of the door."
            },
            "Width": {
                "description": "Total outer width of the door lining. It should only be provided, if it is a rectangular door."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_doorbasequantities.htm"
    },
    "Qto_DuctFittingBaseQuantities": {
        "properties": {
            "GrossCrossSectionArea": {
                "description": "Area of the cross section at the inlet, including the duct fitting itself and the interior flow space."
            },
            "GrossWeight": {
                "description": "Weight of the duct fitting."
            },
            "Length": {
                "description": "Length of the fitting, calculated at midpoint of cross-section and equal to the distance along the flow path from the port inlet to the port outlet. For junction fittings, it indicates the length of the longest flow path."
            },
            "NetCrossSectionArea": {
                "description": "Area of the cross section at the inlet, including the duct fitting and excluding the interior flow space."
            },
            "OuterSurfaceArea": {
                "description": "Total area of the extruded surfaces of the fitting (not taking into account the end cap areas)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_ductfittingbasequantities.htm"
    },
    "Qto_DuctSegmentBaseQuantities": {
        "properties": {
            "GrossCrossSectionArea": {
                "description": "Area of the cross section, including the duct itself and the interior flow space."
            },
            "GrossWeight": {
                "description": "Weight of the duct segment."
            },
            "Length": {
                "description": "Length of the segment, calculated at midpoint of cross-section, equal to the distance between inlet and outlet ports."
            },
            "NetCrossSectionArea": {
                "description": "Area of the cross section of the duct, excluding the interior flow space."
            },
            "OuterSurfaceArea": {
                "description": "Total area of the extruded surfaces of the duct (not taking into account the end cap areas), normally generated as perimeter * length."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_ductsegmentbasequantities.htm"
    },
    "Qto_DuctSilencerBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_ductsilencerbasequantities.htm"
    },
    "Qto_ElectricApplianceBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_electricappliancebasequantities.htm"
    },
    "Qto_ElectricDistributionBoardBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            },
            "NumberOfCircuits": {
                "description": "Number of circuits in the distribution board."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_electricdistributionboardbasequantities.htm"
    },
    "Qto_ElectricFlowStorageDeviceBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_electricflowstoragedevicebasequantities.htm"
    },
    "Qto_ElectricGeneratorBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_electricgeneratorbasequantities.htm"
    },
    "Qto_ElectricMotorBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_electricmotorbasequantities.htm"
    },
    "Qto_ElectricTimeControlBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_electrictimecontrolbasequantities.htm"
    },
    "Qto_EvaporativeCoolerBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_evaporativecoolerbasequantities.htm"
    },
    "Qto_EvaporatorBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_evaporatorbasequantities.htm"
    },
    "Qto_FanBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_fanbasequantities.htm"
    },
    "Qto_FilterBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_filterbasequantities.htm"
    },
    "Qto_FireSuppressionTerminalBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/qset/qto_firesuppressionterminalbasequantities.htm"
    },
    "Qto_FlowInstrumentBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/qset/qto_flowinstrumentbasequantities.htm"
    },
    "Qto_FlowMeterBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_flowmeterbasequantities.htm"
    },
    "Qto_FootingBaseQuantities": {
        "properties": {
            "CrossSectionArea": {
                "description": "Total area of the cross section (or profile) of the footing."
            },
            "GrossSurfaceArea": {
                "description": "Total area of the footing, normally generated as perimeter * length + 2 * cross section area. It is the sum of OuterSurfaceArea + (2 x CrossSectionArea) and shall only be given, if the OuterSurfaceArea and CrossSectionArea cannot be established separately."
            },
            "GrossVolume": {
                "description": "Total gross volume of the footing, not taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "GrossWeight": {
                "description": "Total gross weight of the footing without add-on parts, not taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "Height": {
                "description": "Total nominal height of the footing. It should only be provided, if it is constant."
            },
            "Length": {
                "description": "Length of the footing, not taking into account any cut-out's or other processing features. For strip footings it is measured along the path, for other footings it is one of the horizontal dimensions. It should only be provided, if it is constant."
            },
            "NetVolume": {
                "description": "Total net volume of the footing, taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "NetWeight": {
                "description": "Total net weight of the footing without add-on parts, taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "OuterSurfaceArea": {
                "description": "Total area of the extruded surfaces of the footing (not taking into account the end cap areas), normally generated as perimeter * length."
            },
            "Width": {
                "description": "Total nominal width (or thickness) of the footing. For strip footings it is measured perpendicular to the footing path (or longitudial axis). For other footings it is one of the horizontal dimensions. It should only be provided, if it is constant."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/qset/qto_footingbasequantities.htm"
    },
    "Qto_HeatExchangerBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_heatexchangerbasequantities.htm"
    },
    "Qto_HumidifierBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_humidifierbasequantities.htm"
    },
    "Qto_InterceptorBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/qset/qto_interceptorbasequantities.htm"
    },
    "Qto_JunctionBoxBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            },
            "NumberOfGangs": {
                "description": "Number of gangs in the junction box."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_junctionboxbasequantities.htm"
    },
    "Qto_LaborResourceBaseQuantities": {
        "properties": {
            "OvertimeWork": {
                "description": "Work that is performed after exceeding a particular limit such as hours per day and/or hours per week, after which company or municipal policy requires a different rate to apply.  Note: Policies for when overtime takes effect are the responsibility of the user or application; they are not modelled in IFC."
            },
            "StandardWork": {
                "description": "Work that is performed at regular times, up to a particular limit after which overtime rates may apply."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcconstructionmgmtdomain/qset/qto_laborresourcebasequantities.htm"
    },
    "Qto_LampBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_lampbasequantities.htm"
    },
    "Qto_LightFixtureBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_lightfixturebasequantities.htm"
    },
    "Qto_MemberBaseQuantities": {
        "properties": {
            "CrossSectionArea": {
                "description": "Total area of the cross section (or profile) of the member."
            },
            "GrossSurfaceArea": {
                "description": "Total area of the member, normally generated as perimeter * length + 2 * cross section area. It is the sum of OuterSurfaceArea + (2 x CrossSectionArea) and shall only be given, if the OuterSurfaceArea and CrossSectionArea cannot be established separately."
            },
            "GrossVolume": {
                "description": "Total gross volume of the member, not taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "GrossWeight": {
                "description": "Total gross weight of the member without add-on parts, not taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "Length": {
                "description": "Total nominal length of the member, not taking into account any cut-out's or other processing features."
            },
            "NetSurfaceArea": {
                "description": "Net surface area of the member, normally generated as perimeter * length + 2 * cross section area taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "NetVolume": {
                "description": "Total net volume of the member, taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "NetWeight": {
                "description": "Total net weight of the member without add-on parts, taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "OuterSurfaceArea": {
                "description": "Total area of the extruded surfaces of the member (not taking into account the end cap areas), normally generated as perimeter * length."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_memberbasequantities.htm"
    },
    "Qto_MotorConnectionBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_motorconnectionbasequantities.htm"
    },
    "Qto_OpeningElementBaseQuantities": {
        "properties": {
            "Area": {
                "description": "Area of the opening as viewed by an elevation view (for wall openings) or as viewed by a ground floor view (for slab openings)."
            },
            "Depth": {
                "description": "Depth (or thickness) of the opening, in case of openings it shall be identical to the width (or thickness) of the voided element, in case of recesses it shall be less. Only provided, if the depth is constant."
            },
            "Height": {
                "description": "Height of the opening, in case of wall openings it is the vertical dimension in case of slab openings it is one horizontal dimension. Only provided, if the area is rectangular."
            },
            "Volume": {
                "description": "Volume of the opening. It is the subtraction volume of the opening from the voided element (e.g. wall or slab). In case that the geometric volume of the opening is bigger then the subtraction volume, only the subtraction volume should be used."
            },
            "Width": {
                "description": "Width of the opening, in case of wall openings it is the horizontal dimension in case of slab openings it is one horizontal dimension. Only provided, if the area is rectangular."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/qset/qto_openingelementbasequantities.htm"
    },
    "Qto_OutletBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_outletbasequantities.htm"
    },
    "Qto_PileBaseQuantities": {
        "properties": {
            "CrossSectionArea": {
                "description": "Total area of the cross section (or profile) of the pile."
            },
            "GrossSurfaceArea": {
                "description": "Total area of the pile, normally generated as perimeter * length + 2 * cross section area. It is the sum of OuterSurfaceArea + (2 x CrossSectionArea) and shall only be given, if the OuterSurfaceArea and CrossSectionArea cannot be established separately."
            },
            "GrossVolume": {
                "description": "Total gross volume of the pile, not taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "GrossWeight": {
                "description": "Total gross weight of the pile without add-on parts, not taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "Length": {
                "description": "Total length of the pile not taking into account any cut-out's or other processing features."
            },
            "NetVolume": {
                "description": "Total net volume of the pile, taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "NetWeight": {
                "description": "Total net weight of the pile without add-on parts, taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "OuterSurfaceArea": {
                "description": "Total area of the extruded surfaces of the pile (not taking into account the end cap areas), normally generated as perimeter * length."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/qset/qto_pilebasequantities.htm"
    },
    "Qto_PipeFittingBaseQuantities": {
        "properties": {
            "GrossCrossSectionArea": {
                "description": "Area of the cross section at the inlet, including the pipe fitting itself and the interior flow space."
            },
            "GrossWeight": {
                "description": "Weight of the pipe fitting itself, not including contained fluid."
            },
            "Length": {
                "description": "Length of the fitting, calculated at midpoint of cross-section and equal to the distance along the flow path from the port inlet to the port outlet. For junction fittings, it indicates the length of the longest flow path."
            },
            "NetCrossSectionArea": {
                "description": "Area of the cross section at the inlet, including the pipe fitting and excluding the interior flow space."
            },
            "NetWeight": {
                "description": "Weight of the pipe fitting, including contained fluid as designed."
            },
            "OuterSurfaceArea": {
                "description": "Total area of the extruded surfaces of the fitting (not taking into account the end cap areas)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_pipefittingbasequantities.htm"
    },
    "Qto_PipeSegmentBaseQuantities": {
        "properties": {
            "GrossCrossSectionArea": {
                "description": "Area of the cross section, including the pipe itself and the interior flow space."
            },
            "GrossWeight": {
                "description": "Weight of the pipe segment itself, not including contained fluid."
            },
            "Length": {
                "description": "Length of the segment, calculated at midpoint of cross-section, equal to the distance between inlet and outlet ports."
            },
            "NetCrossSectionArea": {
                "description": "Area of the cross section of the pipe, excluding the interior flow space."
            },
            "NetWeight": {
                "description": "Weight of the pipe segment, including contained fluid as designed."
            },
            "OuterSurfaceArea": {
                "description": "Total area of the extruded surfaces of the pipe (not taking into account the end cap areas), normally generated as perimeter * length."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_pipesegmentbasequantities.htm"
    },
    "Qto_PlateBaseQuantities": {
        "properties": {
            "GrossArea": {
                "description": "Total area of the extruded area of the plate. Openings, recesses and projections are not taken into account. Only given, if the plate is prismatic."
            },
            "GrossVolume": {
                "description": "Total gross volume of the plate. Openings, recesses, and projections are not taken into account."
            },
            "GrossWeight": {
                "description": "Total gross weight of the plate without add-on parts, not taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "NetArea": {
                "description": "Total area of the extruded area of the plate. Openings and recesses are taken into account by subtraction, projections by addition. Only given, if the plate is prismatic."
            },
            "NetVolume": {
                "description": "Total net volume of the plate. Openings and recesses are taken into account by subtraction, projections by addition."
            },
            "NetWeight": {
                "description": "Total net weight of the plate without add-on parts, taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "Perimeter": {
                "description": "Perimeter measured along the outer boundaries of the plate. Only given, if the plate is prismatic (constant thickness)."
            },
            "Width": {
                "description": "Nominal width (or thickness) of the plate. Only given, if the plate is prismatic (constant thickess)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_platebasequantities.htm"
    },
    "Qto_ProjectionElementBaseQuantities": {
        "properties": {
            "Area": {
                "description": "Area of the projection as viewed by an elevation view (for wall projections or as viewed by a ground floor view (for slab projections)."
            },
            "Volume": {
                "description": "Volume of the opening. It is the addition volume of the project to the element (e.g. wall or slab)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/qset/qto_projectionelementbasequantities.htm"
    },
    "Qto_ProtectiveDeviceBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_protectivedevicebasequantities.htm"
    },
    "Qto_ProtectiveDeviceTrippingUnitBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_protectivedevicetrippingunitbasequantities.htm"
    },
    "Qto_PumpBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_pumpbasequantities.htm"
    },
    "Qto_RailingBaseQuantities": {
        "properties": {
            "Length": {
                "description": "Total nominal length of the railing, not taking into account any cut-out's or other processing features."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_railingbasequantities.htm"
    },
    "Qto_RampFlightBaseQuantities": {
        "properties": {
            "GrossArea": {
                "description": "Total area of the ramp flight (not the projected area). Openings, recesses and projections are not taken into account. Only given, if the ramp flight is prismatic."
            },
            "GrossVolume": {
                "description": "Total gross volume of the ramp flight. Openings, recesses, and projections are not taken into account."
            },
            "Length": {
                "description": "Total length of the ramp flight along the walking line."
            },
            "NetArea": {
                "description": "Total area of the ramp flight (not the projected area). Openings and recesses are taken into account by subtraction, projections by addition. Only given, if the ramp flight is prismatic."
            },
            "NetVolume": {
                "description": "Total net volume of the ramp flight. Openings and recesses are taken into account by subtraction, projections by addition."
            },
            "Width": {
                "description": "Thickness of the ramp flight. It should only be provided, if it is constant."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_rampflightbasequantities.htm"
    },
    "Qto_ReinforcingElementBaseQuantities": {
        "properties": {
            "Count": {
                "description": "Total count of reinforcing items."
            },
            "Length": {
                "description": "Total length of reinforcing."
            },
            "Weight": {
                "description": "Total weight of reinforcing."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcstructuralelementsdomain/qset/qto_reinforcingelementbasequantities.htm"
    },
    "Qto_RoofBaseQuantities": {
        "properties": {
            "GrossArea": {
                "description": "Total gross area of the outer surface of the roof. It is the sum of all roof slab gross areas. Roof openings, like sky windows and other openings and cut-outs are not taken into account."
            },
            "NetArea": {
                "description": "Total net area of the outer surface of the roof. It is the suma of all roof slab net areas. Roof openings, like sky windows and other openings and cut-outs are taken into account."
            },
            "ProjectedArea": {
                "description": "Total gross area of the outer surfaces of the roof, projected tp the ground. It is the sum of all projected roof slab gross areas. Roof openings, like sky windows and other openings and cut-outs are not taken into account."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_roofbasequantities.htm"
    },
    "Qto_SanitaryTerminalBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/qset/qto_sanitaryterminalbasequantities.htm"
    },
    "Qto_SensorBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/qset/qto_sensorbasequantities.htm"
    },
    "Qto_SiteBaseQuantities": {
        "properties": {
            "GrossArea": {
                "description": "Gross area for this site, measured in horizontal projections."
            },
            "GrossPerimeter": {
                "description": "Perimeter of the site boundary, measured in horizontal projection."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/qset/qto_sitebasequantities.htm"
    },
    "Qto_SlabBaseQuantities": {
        "properties": {
            "Depth": {
                "description": "Depth (one direction of the non-projected foot print area) of the slab. It shall only be provided, if the slab is rectangular."
            },
            "GrossArea": {
                "description": "Total area of the extruded area of the slab. Openings, recesses and projections are not taken into account. Only given, if the slab is prismatic."
            },
            "GrossVolume": {
                "description": "Total gross volume of the slab. Openings, recesses, and projections are not taken into account."
            },
            "GrossWeight": {
                "description": "Total gross weight of the slab without add-on parts, not taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "Length": {
                "description": "Length (one direction of the non-projected foot print area) of the slab. It shall only be provided, if the slab is rectangular."
            },
            "NetArea": {
                "description": "Total area of the extruded area of the slab. Openings and recesses are taken into account by subtraction, projections by addition. Only given, if the slab is prismatic."
            },
            "NetVolume": {
                "description": "Total net volume of the slab. Openings and recesses are taken into account by subtraction, projections by addition."
            },
            "NetWeight": {
                "description": "Total net weight of the slab without add-on parts, taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "Perimeter": {
                "description": "Perimeter measured along the outer boundaries of the slab. Only given, if the slab is prismatic (constant thickness)."
            },
            "Width": {
                "description": "Nominal width (or thickness) of the slab. Only given, if the slab is prismatic (constant thickess)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_slabbasequantities.htm"
    },
    "Qto_SolarDeviceBaseQuantities": {
        "properties": {
            "GrossArea": {
                "description": "Area of the solar device including the outer frame."
            },
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_solardevicebasequantities.htm"
    },
    "Qto_SpaceBaseQuantities": {
        "properties": {
            "FinishCeilingHeight": {
                "description": "Height of the suspended ceiling (from top of flooring to the bottom of the suspended ceiling). To be provided only if the space has a suspended ceiling with constant height."
            },
            "FinishFloorHeight": {
                "description": "Height of the flooring (from base slab without flooring to the flooring height). To be provided only if the space has a constant flooring height."
            },
            "GrossCeilingArea": {
                "description": "Sum of all ceiling areas of the space. It includes the area covered by elementsinside the space (columns, inner walls, etc.). The ceiling area is the real (and not the projected) area (e.g. in case of sloped ceilings)."
            },
            "GrossFloorArea": {
                "description": "Sum of all floor areas covered by the space. It includes the area covered by elementsinside the space (columns, inner walls, etc.) and excludes the area covered by wall claddings."
            },
            "GrossPerimeter": {
                "description": "Gross perimeter at the floor level of this space. It all sides of the space, including those parts of the perimeter that are created by virtual boundaries and openings (like doors)."
            },
            "GrossVolume": {
                "description": "Gross volume enclosed by the space, including the volume of construction elements inside the space."
            },
            "GrossWallArea": {
                "description": "Sum of all wall (and other vertically bounding elements, like columns) areas bounded by the space. It includes the area covered by elements inside the wall area (doors, windows, other openings, etc.)."
            },
            "Height": {
                "description": "Total height (from base slab without flooring to ceiling without suspended ceiling) for this space (measured from top of slab below to bottom of slab above). To be provided only if the space has a constant height."
            },
            "NetCeilingArea": {
                "description": "Sum of all ceiling areas of the space. It excludes the area covered by elementsinside the space (columns, inner walls, etc.). The ceiling area is the real (and not the projected) area (e.g. in case of sloped ceilings)."
            },
            "NetFloorArea": {
                "description": "Sum of all usable floor areas covered by the space. It excludes the area covered  by elements inside the space (columns, inner walls, built-in's etc.), slab openings, or other protruding elements. Varying heights are not taking into account (i.e. no reduction for areas under a minimum headroom)."
            },
            "NetPerimeter": {
                "description": "Net perimeter at the floor level of this space. It excludes those parts of the perimeter that are created by by virtual boundaries and openings (like doors). It is the measurement used for skirting boards and may includes the perimeter of internal fixed objects like columns."
            },
            "NetVolume": {
                "description": "Net volume enclosed by the space, excluding the volume of construction elements inside the space."
            },
            "NetWallArea": {
                "description": "Sum of all wall (and other vertically bounding elements, like columns) areas bounded by the space. It excludes the area covered by elements inside the wall area (doors, windows, other openings, etc.)."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/qset/qto_spacebasequantities.htm"
    },
    "Qto_SpaceHeaterBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element itself, not including contained fluid."
            },
            "Length": {
                "description": "Length of the water tube inside the component, if applicable."
            },
            "NetWeight": {
                "description": "Weight of the element, including contained fluid as designed."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_spaceheaterbasequantities.htm"
    },
    "Qto_StackTerminalBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/qset/qto_stackterminalbasequantities.htm"
    },
    "Qto_StairFlightBaseQuantities": {
        "properties": {
            "GrossVolume": {
                "description": "Total gross volume of the stair flight. Openings, recesses, and projections are not taken into account."
            },
            "Length": {
                "description": "Total length of the stair flight along the walking line."
            },
            "NetVolume": {
                "description": "Total net volume of the stair flight. Openings and recesses are taken into account by subtraction, projections by addition."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_stairflightbasequantities.htm"
    },
    "Qto_SwitchingDeviceBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_switchingdevicebasequantities.htm"
    },
    "Qto_TankBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element itself, not including contained fluid."
            },
            "NetWeight": {
                "description": "Weight of the element, including contained fluid as designed."
            },
            "TotalSurfaceArea": {
                "description": "Total surface area of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_tankbasequantities.htm"
    },
    "Qto_TransformerBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcelectricaldomain/qset/qto_transformerbasequantities.htm"
    },
    "Qto_TubeBundleBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element itself, not including contained fluid."
            },
            "NetWeight": {
                "description": "Weight of the element, including contained fluid as designed."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_tubebundlebasequantities.htm"
    },
    "Qto_UnitaryControlElementBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcbuildingcontrolsdomain/qset/qto_unitarycontrolelementbasequantities.htm"
    },
    "Qto_UnitaryEquipmentBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_unitaryequipmentbasequantities.htm"
    },
    "Qto_ValveBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_valvebasequantities.htm"
    },
    "Qto_VibrationIsolatorBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifchvacdomain/qset/qto_vibrationisolatorbasequantities.htm"
    },
    "Qto_WallBaseQuantities": {
        "properties": {
            "GrossFootprintArea": {
                "description": "Area of the wall as viewed by a ground floor view, not taking any wall modifications (like recesses) into account. It is also referred to as the foot print of the wall."
            },
            "GrossSideArea": {
                "description": "Area of the wall as viewed by an elevation view of the middle plane of the wall.  It does not take into account any wall modifications (such as openings)."
            },
            "GrossVolume": {
                "description": "Volume of the wall, without taking into account the openings and the connection geometry."
            },
            "GrossWeight": {
                "description": "Total gross weight of the wall, without add-on parts, not taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "Height": {
                "description": "Total nominal height of the wall. It should only be provided, if it is constant along the wall path."
            },
            "Length": {
                "description": "Total nominal length of the wall along the wall center line (even if different to the wall path)."
            },
            "NetFootprintArea": {
                "description": "Area of the wall as viewed by a ground floor view, taking all wall modifications (like recesses) into account. It is also referred to as the foot print of the wall."
            },
            "NetSideArea": {
                "description": "Area of the wall as viewed by an elevation view of the middle plane. It does take into account all wall modifications (such as openings)."
            },
            "NetVolume": {
                "description": "Volume of the wall, after subtracting the openings and after considering the connection geometry."
            },
            "NetWeight": {
                "description": "Total net weight of the wall, without add-on parts, taking into account possible processing features (cut-out's, etc.) or openings and recesses."
            },
            "Width": {
                "description": "Total nominal width (or thickness) of the wall measured perpendicular to the wall path. It should only be provided, if it is constant along the wall path."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_wallbasequantities.htm"
    },
    "Qto_WasteTerminalBaseQuantities": {
        "properties": {
            "GrossWeight": {
                "description": "Weight of the element."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcplumbingfireprotectiondomain/qset/qto_wasteterminalbasequantities.htm"
    },
    "Qto_WindowBaseQuantities": {
        "properties": {
            "Area": {
                "description": "Total area of the outer lining of the window."
            },
            "Height": {
                "description": "Total outer heigth of the window lining. It should only be provided, if it is a rectangular window."
            },
            "Perimeter": {
                "description": "Total perimeter of the outer lining of the window."
            },
            "Width": {
                "description": "Total outer width of the window lining. It should only be provided, if it is a rectangular window."
            }
        },
        "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_windowbasequantities.htm"
    }
}