You can now change wall heights in bulk

src/blenderbim/blenderbim/bim/module/model/__init__.py

@@ -27,6 +27,7 @@ classes = (
     product.DynamicallyVoidProduct,
     workspace.Hotkey,
     wall.AlignWall,
+    wall.ChangeExtrusionDepth,
     wall.FlipWall,
     wall.JoinWall,
     wall.MergeWall,

src/blenderbim/blenderbim/bim/module/model/prop.py

@@ -120,6 +120,7 @@ class BIMModelProperties(PropertyGroup):
     )
     occurrence_name_function: bpy.props.StringProperty(name="Occurrence Name Function")
     getter_enum = {"ifc_class": get_ifc_class, "relating_type": get_relating_type}
+    extrusion_depth: bpy.props.FloatProperty(default=42.0)
 
 
 def get_relating_type_info(self, context):

src/blenderbim/blenderbim/bim/module/model/wall.py

@@ -215,6 +215,43 @@ class RecalculateWall(bpy.types.Operator):
         return {"FINISHED"}
 
 
+class ChangeExtrusionDepth(bpy.types.Operator):
+    bl_idname = "bim.change_extrusion_depth"
+    bl_label = "Change Extrusion Depth"
+    bl_options = {"REGISTER", "UNDO"}
+    depth: bpy.props.FloatProperty()
+
+    @classmethod
+    def poll(cls, context):
+        return context.selected_objects
+
+    def execute(self, context):
+        for obj in context.selected_objects:
+            element = tool.Ifc.get_entity(obj)
+            if not element:
+                return
+            representation = ifcopenshell.util.representation.get_representation(element, "Model", "Body", "MODEL_VIEW")
+            if not representation:
+                return
+            extrusion = self.get_extrusion(representation)
+            if not extrusion:
+                return
+            print(extrusion)
+            extrusion.Depth = self.depth
+            print(extrusion)
+        DumbWallRecalculator().recalculate(context.selected_objects)
+        return {"FINISHED"}
+
+    def get_extrusion(self, representation):
+        item = representation.Items[0]
+        while True:
+            if item.is_a("IfcExtrudedAreaSolid"):
+                return item
+            elif item.is_a("IfcBooleanClippingResult"):
+                item = item.FirstOperand
+            else:
+                break
+
 def recalculate_dumb_wall_origin(wall, new_origin=None):
     if new_origin is None:
         new_origin = wall.matrix_world @ Vector(wall.bound_box[0])

src/blenderbim/blenderbim/bim/module/model/workspace.py

@@ -131,6 +131,11 @@ class BimTool(WorkSpaceTool):
 
         if ifc_classes:
             if ifc_class == "IfcWallType":
+                row = layout.row(align=True)
+                row.prop(data=props, property="extrusion_depth", text="Height")
+                op = row.operator("bim.change_extrusion_depth", icon="FILE_REFRESH", text="")
+                op.depth = props.extrusion_depth
+
                 row = layout.row()
                 row.label(text="Join")
                 row = layout.row(align=True)