IFC 4.4.0.0 build 20261005 (IFC4X4_DEV_20260525) ⚠ buildingSMART Working Draft. All content is under development.

  • Help suggest improvements
  • Get user or developer support

8.16.3.4 IfcProperty

RV ⓘ
AbV ⓘ

ABSTRACT This definition may not be instantiated

8.16.3.4.1 Semantic definition

IfcProperty is an abstract generalization for all types of properties that can be associated with IFC objects through the property set mechanism.

8.16.3.4.2 Entity inheritance

8.16.3.4.3 Attributes

# Attribute Type Description
IfcPropertyAbstraction (1)
HasExternalReferences SET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjects

Reference to an external reference, e.g. library, classification, or document information, that is associated to the property definition.

Click to show 1 hidden inherited attributes Click to hide 1 inherited attributes
IfcProperty (8)
1 Name IfcIdentifier

Name for this property. This label is the significant name string that defines the semantic meaning for the property.

2 Specification OPTIONAL IfcText

URI reference to a location with semantic definition or informative text to explain the property.

HasApprovals SET [0:?] OF IfcResourceApprovalRelationship FOR RelatedResourceObjects

User-defined approvals for the property.

HasConstraints SET [0:?] OF IfcResourceConstraintRelationship FOR RelatedResourceObjects

User-defined constraints for the property.

PartOfComplex SET [0:?] OF IfcComplexProperty FOR HasProperties

Reference to the IfcComplexProperty in which the IfcProperty is contained.

PartOfPset SET [0:?] OF IfcPropertySet FOR HasProperties

Reference to the IfcPropertySet by which the IfcProperty is referenced.

PropertyDependsOn SET [0:?] OF IfcPropertyDependencyRelationship FOR DependantProperty

The relating property on which the value of the property depends.

PropertyForDependance SET [0:?] OF IfcPropertyDependencyRelationship FOR DependingProperty

The property on whose value that of another property depends.

Table A

8.16.3.4.4 Formal representation

ENTITY IfcProperty
ABSTRACT SUPERTYPE OF (ONEOF
(IfcComplexProperty
,IfcSimpleProperty))
SUBTYPE OF (IfcPropertyAbstraction);
Name : IfcIdentifier;
Specification : OPTIONAL IfcText;
INVERSE
HasApprovals : SET [0:?] OF IfcResourceApprovalRelationship FOR RelatedResourceObjects;
HasConstraints : SET [0:?] OF IfcResourceConstraintRelationship FOR RelatedResourceObjects;
PartOfComplex : SET [0:?] OF IfcComplexProperty FOR HasProperties;
PartOfPset : SET [0:?] OF IfcPropertySet FOR HasProperties;
PropertyDependsOn : SET [0:?] OF IfcPropertyDependencyRelationship FOR DependantProperty;
PropertyForDependance : SET [0:?] OF IfcPropertyDependencyRelationship FOR DependingProperty;
END_ENTITY;

8.16.3.4.5 References

Edit on Github

4 contributor(s): ArturTomczakThomas KrijnenDion MoultbSI-Bot
Last change: Improve definition split (#876) * bring back headers headers were previously removed by mistake, now bringing them back * add new lines and rename the tag add the word 'short' in it * unify newlines make exactly one newline before and two after the tag * resolving typos Because bringing back headers required to go back in time to previous version, I'm now re-resolving the issues: #861, #860, #856 by ArturTomczak on 2024-07-16T16:07:28+02:00

Is this page difficult to understand? Let us know!

8.16.3.4.6 Changelog

8.16.3.4.6.1 IFC4

  • inverse attribute, HasApprovals
  • inverse attribute, HasConstraints
  • inverse attribute, PartOfPset
  • inverse attribute PartOfComplex type, Changed from "SET OF [0:1] IfcComplexProperty FOR HasProperties" to "SET OF [0:?] IfcComplexProperty FOR HasProperties"

8.16.3.4.6.2 IFC4.3_ADD2

  • attribute Description name, Changed from "Description" to "Specification"