IfcRelCoversBldgElements

Item	Change	Description
IFC2x3 to IFC4
IfcRelCoversBldgElements	MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
OwnerHistory	MODIFIED	Instantiation changed to OPTIONAL.

Semantic definitions at the entity

Entity definition

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:

IfcRelCoversBldgElements to assign coverings to elements.
NOTE This relationship is now deprecated and replaced by IfcRelAggregates.
IfcRelCoversSpaces to assign coverings to spaces

NOTE This relationship is now deprecated and replaced by IfcRelContainedInSpatialStructure.

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.

Attribute definitions

#	Attribute	Type	Cardinality	Description	G
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.	X
6	RelatedCoverings	IfcCovering	S[1:?]	Relationship to the set of coverings that are assigned to this element.	X

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	G
IfcRoot
1	GlobalId	IfcGloballyUniqueId		Assignment of a globally unique identifier within the entire software world.	X
2	OwnerHistory	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, NOTE only the last modification in stored - either as addition, deletion or modification. IFC4 CHANGE The attribute has been changed to be OPTIONAL.	X
3	Name	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.	X
4	Description	IfcText	?	Optional description, provided for exchanging informative comments.	X
IfcRelationship
IfcRelConnects
IfcRelCoversBldgElements
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.	X
6	RelatedCoverings	IfcCovering	S[1:?]	Relationship to the set of coverings that are assigned to this element.	X

#	Concept	Template	Model View
IfcRoot
	Identity	Software Identity	General Usage
	Revision Control	Revision Control	General Usage

Formal representations

XML Specification

 <xs:element name="IfcRelCoversBldgElements" type="ifc:IfcRelCoversBldgElements" substitutionGroup="ifc:IfcRelConnects" nillable="true"/>

 <xs:complexType name="IfcRelCoversBldgElements">

  <xs:complexContent>

   <xs:extension base="ifc:IfcRelConnects">

    <xs:sequence>

     <xs:element name="RelatingBuildingElement" type="ifc:IfcElement" nillable="true"/>

     <xs:element name="RelatedCoverings">

      <xs:complexType>

       <xs:sequence>

        <xs:element ref="ifc:IfcCovering" maxOccurs="unbounded"/>

       </xs:sequence>

       <xs:attribute ref="ifc:itemType" fixed="ifc:IfcCovering"/>

       <xs:attribute ref="ifc:cType" fixed="set"/>

       <xs:attribute ref="ifc:arraySize" use="optional"/>

      </xs:complexType>

     </xs:element>

    </xs:sequence>

   </xs:extension>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcRelCoversBldgElements

 SUBTYPE OF (IfcRelConnects);

  RelatingBuildingElement : IfcElement;

  RelatedCoverings : SET [1:?] OF IfcCovering;

END_ENTITY;

 EXPRESS-G diagram

	Ordnet Bekleidung / Belag einem Bauteil zu - Relation
	Rel Covers Bldg Elements

IfcRelCoversBldgElements

Semantic definitions at the entity

Inherited definitions from supertypes

Definitions applying to General Usage

Formal representations