IFC 4.3.x development

8.16.3.3 IfcPreDefinedProperties

Change log

IFC4

added

8.16.3.3.1 Semantic definitions at the entity

The IfcPreDefinedProperties is an abstract supertype of all predefined property collections that have explicit attributes, each representing a property. Instantiable subtypes are assigned to specific characterised entities.

HISTORY  New entity in IFC4.

# Attribute Type Description
IfcPropertyAbstraction
HasExternalReferencesSET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjectsReference to an external reference, e.g. library, classification, or document information, that is associated to the property definition.

> IFC4 CHANGE New inverse attribute.

8.16.3.3.1 Entity inheritance

dot_inheritance IfcReinforcementBarProperties IfcReinforcementBarProperties IfcPreDefinedProperties IfcPreDefinedProperties IfcReinforcementBarProperties->IfcPreDefinedProperties IfcPropertyAbstraction IfcPropertyAbstraction IfcPreDefinedProperties->IfcPropertyAbstraction IfcSectionProperties IfcSectionProperties IfcSectionProperties->IfcPreDefinedProperties IfcSectionReinforcementProperties IfcSectionReinforcementProperties IfcSectionReinforcementProperties->IfcPreDefinedProperties IfcPropertyAbstraction_children 3 more... IfcPropertyAbstraction_children->IfcPropertyAbstraction

8.16.3.3.2 Formal representations

ENTITY IfcPreDefinedProperties
 ABSTRACT SUPERTYPE OF (ONEOF
	(IfcReinforcementBarProperties
	,IfcSectionProperties
	,IfcSectionReinforcementProperties))
 SUBTYPE OF (IfcPropertyAbstraction);
END_ENTITY;