IfcBuildingElementPart
Definition from IAI: Layers or major components as subordinate parts of a building element. Typical usage examples include precast concrete sandwich walls, where the layers may have different geometry representations. In this case the layered material representation does not sufficiently describe the element. Each layer is represented by an own instance of the IfcBuildingElementPart with its own geometry description.
HISTORY New entity in IFC Release 2x2
General usage
The exact type information of the IfcBuildingElementPart is given in the ObjectType attribute inherited from IfcObject. Standard type designations are provided for guideline below. Other object type values may be defined in local agreements.
| Standard building element part type designation | Description |
| 'Insulation layer' | The part consists of an insulation layer, for example as thermal isolation between wall panels in sandwich walls. |
| 'Precast panel' | The part is a precast panel, usually as an internal or external layer in a sandwich wall panel. |
| 'Wooden part' | A wooden part included or embedded in a building element. |
Property Set Use Definition:
The property sets relating to the IfcBuildingElementPart are defined by the IfcPropertySet and attached by the IfcRelDefinesByProperties relationship. It is accessible by the inverse IsDefinedBy relationship. The following property set definitions specific to the IfcBuildingElementPart are part of this IFC release:
Geometry Use Definitions:
The geometric representation of IfcBuildingElementPart is given by the IfcProductDefinitionShape, allowing multiple geometric representations. Included are:
Local Placement
The use of local placement is defined at the
supertype IfcBuildingElementComponent.
Standard Geometric Representation
The use of Standard
Geometric Representations is defined at the supertype
IfcBuildingElementComponent.
EXPRESS specification:
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