IFC 4.3.x development

6.1.3.38 IfcRelCoversBldgElements

6.1.3.38.1 Semantic definitions at the entity

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

NOTE  The definition of IfcCoverings include both the coverings of building elements, such as flooring or cladding. and the covering of distribution elements, such as wrapping or sleeving.

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.

HISTORY  New entity in IFC1.5

DEPRECATION  The relationship IfcRelCoversBldgElements shall not be used anymore, use IfcRelAggregates instead.

6.1.3.38.1 Attributes

#Attribute Type Description
IfcRoot
1GlobalId IfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world.
2OwnerHistory OPTIONAL IfcOwnerHistoryAssignment 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,

> NOTE  only the last modification in stored - either as addition, deletion or modification.

> IFC4 CHANGE  The attribute has been changed to be OPTIONAL.
3Name 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.
4Description OPTIONAL IfcText Optional description, provided for exchanging informative comments.
IfcRelationship
IfcRelConnects
IfcRelCoversBldgElements
5RelatingBuildingElementIfcElement 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.
6RelatedCoverings SET [1:?] OF IfcCoveringRelationship to the set of coverings that are assigned to this element.

6.1.3.38.2 Entity inheritance

dot_inheritance IfcRelCoversBldgElements IfcRelCoversBldgElements IfcRelConnects IfcRelConnects IfcRelCoversBldgElements->IfcRelConnects IfcRelConnects_children 15 more... IfcRelConnects_children->IfcRelConnects IfcRelationship IfcRelationship IfcRelConnects->IfcRelationship IfcRelationship_children 5 more... IfcRelationship_children->IfcRelationship IfcRoot IfcRoot IfcRelationship->IfcRoot IfcObjectDefinition IfcObjectDefinition IfcObjectDefinition->IfcRoot IfcPropertyDefinition IfcPropertyDefinition IfcPropertyDefinition->IfcRoot

6.1.3.38.3 Definitions applying to General Usage

6.1.3.38.3.1 Identity

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

6.1.3.38.3.2 Revision Control

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

6.1.3.38.4 Formal representations

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