#2185 Write documentation about viewing construction types

src/blenderbim/docs/users/exploring_an_ifc_model.rst

@@ -298,9 +298,57 @@ You can find **Quantities** in the **IFC Quantity Sets** subpanel.
 Viewing construction types
 --------------------------
 
-TODO
+Almost everything in the built environment will have a **Construction Type**.
+For example, an architect will specify a door type for every door in a project.
+
+You can see a list of **Construction Types** in the **Outliner** panel in the
+**Types** collection. For example, if the architect has a wall types schedule
+with the wall type names of ``WT01``, ``WT02``, and ``WT03``, you should see
+three **IfcWallType** objects with those same names in the **Outliner**.
+
+You can click on these types to see more details about them in the **Object
+Properties** panel.
+
+.. image:: outliner-types.png
+
+When selecting an object, you can also see its construction type in **Object
+Properties** under the **IFC Construction Type** subpanel. You can press the
+**Select Icon** to select all objects that are of the same **Construction
+Type**. You can use the hide and isolate hotkeys to quickly view them in the
+model.
+
+.. image:: properties-types.png
+
+A **Construction Type** defines properties that are common to all occurrences of
+that type. For example, if a wall type specifies a fire rating property, then
+all walls of that wall type will inherit that fire rating too.
+
+A **Construction Type** may also specify geometry or geometric rules that are
+common to all occurrences of the type. For example, a pump type will define the
+geometry of the pump, so all occurrences of that pump will have the same
+geometry.
+
+You can visually inspect types in isolation to the rest of the model. Types are
+hidden by default, so first enable the visibility of the **Types** collection in
+the **Outliner** by pressing the **Visibility Icon**. Then, select a type, and
+click on ``View > Local View > Toggle Local View`` (hotkey ``/``) in the
+**Viewport**. Toggle the view again to see the entire model again.
+
+.. image:: type-local-view.png
+
+.. note::
+
+   Only **Construction Types** where the geometry is exactly the same for all
+   occurrences will specify geometry. When the geometry varies based on the
+   occurrence (such as a wall, which varies based on the wall length), the
+   **Construction Type** will typically have no geometry.
 
 Viewing materials
 -----------------
 
 TODO
+
+Taking simple measurements
+--------------------------
+
+TODO

src/blenderbim/docs/users/introduction_to_bim.rst

@@ -15,7 +15,7 @@ described are:
 These objects may have lots of data and relationships. Examples of data might be
 classification systems, physical materials, associated documents, simulation
 results, and construction types. The data may be relevant to multiple
-disciplines, such a architecture, engineering, and construction.
+disciplines, such as architecture, engineering, and construction.
 
 .. note::