IFC 4.3.0.1 (IFC4X3) development

6.1.3.29 IfcRelCoversBldgElements

6.1.3.29.1 Semantic definition

The IfcRelCoversBldgElements relationship is an objectified relationship between an element and one to many coverings, which cover that element.

The IFC specification provides two relationships:

Whether the relationship between the covering and the space, or between the covering and the element, is regarded as primary, has to be determined within the context of a model view definition.

6.1.3.29.2 Entity inheritance

6.1.3.29.3 Attributes

# Attribute Type Description
IfcRoot (4)
1 GlobalId IfcGloballyUniqueId

Assignment of a globally unique identifier within the entire software world.

2 OwnerHistory OPTIONAL IfcOwnerHistory

Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,

3 Name OPTIONAL IfcLabel

Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule.

4 Description OPTIONAL IfcText

Optional description, provided for exchanging informative comments.

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IfcRelCoversBldgElements (2)
5 RelatingBuildingElement IfcElement

Relationship to the element that is covered. It includes building elements for coverings such as flooring or cladding, or distribution elements for coverings such as sleeving or wrapping.

6 RelatedCoverings SET [1:?] OF IfcCovering

Relationship to the set of coverings that are assigned to this element.

Table 6.1.3.29.A

6.1.3.29.4 Concept usage

Concept Usage Description
IfcRoot (2)
Revision Control General

Ownership, history, and merge state is captured using IfcOwnerHistory.

Software Identity General

IfcRoot assigns the globally unique ID. In addition it may provide for a name and a description about the concept.

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Table 6.1.3.29.B

6.1.3.29.5 Formal representation

ENTITY IfcRelCoversBldgElements
 SUBTYPE OF (IfcRelConnects);
	RelatingBuildingElement : IfcElement;
	RelatedCoverings : SET [1:?] OF IfcCovering;
END_ENTITY;

6.1.3.29.6 References

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