IFC 4.3.2.20250327 (IFC4X3_ADD2) under development

8.6.3.8 IfcExternalReferenceRelationship

8.6.3.8.1 Semantic definition

IfcExternalReferenceRelationship is a relationship entity that enables objects from the IfcResourceObjectSelect to have the ability to be tagged by external references.

8.6.3.8.2 Entity inheritance

8.6.3.8.3 Attributes

# Attribute Type Description
IfcResourceLevelRelationship (2)
Click to show 2 hidden inherited attributes
IfcExternalReferenceRelationship (2)
3 RelatingReference IfcExternalReference

An external reference that can be used to tag an object within the range of IfcResourceObjectSelect.

4 RelatedResourceObjects SET [1:?] OF IfcResourceObjectSelect

Objects within the list of IfcResourceObjectSelect that can be tagged by an external reference to a dictionary, library, catalogue, classification or documentation.

Table 8.6.3.8.A

8.6.3.8.4 Formal representation

ENTITY IfcExternalReferenceRelationship
SUBTYPE OF (IfcResourceLevelRelationship);
RelatingReference : IfcExternalReference;
RelatedResourceObjects : SET [1:?] OF IfcResourceObjectSelect;
END_ENTITY;

8.6.3.8.5 References

Edit on Github


Is this page difficult to understand? Let us know!

8.6.3.8.6 Changelog

8.6.3.8.6.1 IFC4

  • New resource