• Door hardware
• Window hardware
• Restroom accessories

In case of a door or window hardware, the inherited attribute SELF\IfcProduct.ObjectType should have on of the following values (if applicable in the project context):

• Hingeset
• Lockset
• Handset
• Deadbolt
• Kickplate
• Pushplate
• Peephole
• Knocker
• DoorStop
• Passthrough

The assessory is attached to the IfcBuildingElement (or other subtypes of IfcElement) via the objectified relationship IfcRelAggregates.

ISSUE: See issue log for changes made in IFC Release 2x. Entity has been renamed from IfcBuiltInAssessory
HISTORY New Entity in IFC Release 2.0

Geometry Use Definitions:

The geometric representation of IfcAssessory is given by the IfcProductDefinitionShape, allowing multiple geometric representation. Included are:

Local placement

The local placement for IfcBuiltIn is defined in its supertype IfcProduct. It is defined by the IfcLocalPlacement, which defines the local coordinate system that is referenced by all geometric representations.

• If the IfcAssessory is attached to a building element (subtype of IfcBuildingElement using the IfcRelAggregates relationship) then the PlacementRelTo relationship of IfcLocalPlacement shall point (if given) to this building element.
• Otherwise, the PlacementRelTo relationship of IfcLocalPlacement shall point (if given) to the same IfcSpatialStructureElement , which is used in the ContainedInStructure inverse attribute, or to a spatial structure element at a higher level, referenced by that.
• If the relative placement is not used, the absolute placement is defined within the world coordinate system.

Geometric Representation

The BoundingBox, the SurfaceModel and the Brep geometric representation of IfcAssessory is defined at the supertype IfcEquipmentElement.