5.4.3.58 IfcRelServicesBuildings

5.4.3.58.1 Semantic definition

The IfcRelServicesBuildings is an objectified relationship that defines the relationship between a system and the sites, buildings, storeys, spaces, or spatial zones, it serves. Examples of systems are:

• building service systems (heating, cooling, waste water system) represented by instances of IfcDistributionSystem;
• building systems (fenestration, shading) represented by instances of IfcBuildingSystem;
• zones as collection of logically grouped spaces represented by instances of IfcZone
• idealized structural analysis systems represented by instances of IfcStructuralAnalysisModel.

5.4.3.58.2 Entity inheritance

1. • IfcRoot
2. • IfcRelationship
   • IfcObjectDefinition
   • IfcPropertyDefinition
3. • IfcRelConnects
   • IfcRelAssigns
   • IfcRelAssociates
   • IfcRelDeclares
   • IfcRelDecomposes
   • IfcRelDefines
4. • IfcRelServicesBuildings
   • IfcRelConnectsElements
   • IfcRelConnectsPortToElement
   • IfcRelConnectsPorts
   • IfcRelConnectsStructuralActivity
   • IfcRelConnectsStructuralMember
   • IfcRelContainedInSpatialStructure
   • IfcRelCoversBldgElements
   • IfcRelCoversSpaces
   • IfcRelFillsElement
   • IfcRelFlowControlElements
   • IfcRelInterferesElements
   • IfcRelPositions
   • IfcRelReferencedInSpatialStructure
   • IfcRelSequence
   • IfcRelSpaceBoundary

5.4.3.58.3 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.
Click to show 4 hidden inherited attributes Click to hide 4 inherited attributes
IfcRelServicesBuildings (2)
5	RelatingSystem	IfcSystem	System that services the Buildings.
6	RelatedBuildings	SET [1:?] OF IfcSpatialElement	Spatial structure elements (including site, building, storeys) that are serviced by the system.

5.4.3.58.4 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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5.4.3.58.5 Formal representation

ENTITY IfcRelServicesBuildings
 SUBTYPE OF (IfcRelConnects);
	RelatingSystem : IfcSystem;
	RelatedBuildings : SET [1:?] OF IfcSpatialElement;
END_ENTITY;

5.4.3.58.6 References

• IfcRelConnects
• IfcSpatialElement
• IfcSystem