IfcRelServicesBuildings

Natural language names
Zuordnung Anlage zu räumlicher Gliederung - Relation
Rel Services Buildings
Change log
ItemSPFXMLChangeDescription
4.0.0.0
    IfcRelServicesBuildings
      OwnerHistoryMODIFIEDInstantiation changed to OPTIONAL.
      RelatedBuildingsXXMODIFIEDType changed from IfcSpatialStructureElement to IfcSpatialElement.
Semantic definitions at the entity
Entity 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:

NOTE  The name IfcRelServicesBuildings is a known anomaly, as the relationship is not restricted to buildings anymore.
HISTORY  New entity in IFC1.0.
IFC2x CHANGE  The data type of the attribute RelatedBuildings has been changed from IfcBuilding to its supertype IfcSpatialStructureElement with upward compatibility for file based exchange.
Attribute definitions
#AttributeTypeCardinalityDescription G
5RelatingSystemIfcSystem System that services the Buildings. X
6RelatedBuildingsIfcSpatialElementS[1:?] Spatial structure elements (including site, building, storeys) that are serviced by the system.
IFC2x CHANGE  The data type has been changed from IfcBuilding to IfcSpatialStructureElement with upward compatibility for file based exchange.
IFC4 CHANGE  The data type has been changed from IfcSpatialStructureElement to IfcSpatialElement with upward compatibility for file based exchange.
X
Inherited definitions from supertypes
Entity inheritance IfcRelConnects IfcRelationship IfcRoot
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcRoot
1GlobalIdIfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world. X
2OwnerHistoryIfcOwnerHistory? 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
3NameIfcLabel? 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
4DescriptionIfcText? Optional description, provided for exchanging informative comments.X
IfcRelationship
IfcRelConnects
IfcRelServicesBuildings
5RelatingSystemIfcSystem System that services the Buildings. X
6RelatedBuildingsIfcSpatialElementS[1:?] Spatial structure elements (including site, building, storeys) that are serviced by the system.
IFC2x CHANGE  The data type has been changed from IfcBuilding to IfcSpatialStructureElement with upward compatibility for file based exchange.
IFC4 CHANGE  The data type has been changed from IfcSpatialStructureElement to IfcSpatialElement with upward compatibility for file based exchange.
X
Definitions applying to General Usage

Concept inheritance

#ConceptTemplateModel View
IfcRoot
IdentitySoftware IdentityGeneral Usage
Revision ControlRevision ControlGeneral Usage
Formal representations
XML Specification
 <xs:element name="IfcRelServicesBuildings" type="ifc:IfcRelServicesBuildings" substitutionGroup="ifc:IfcRelConnects" nillable="true"/>
 <xs:complexType name="IfcRelServicesBuildings">
  <xs:complexContent>
   <xs:extension base="ifc:IfcRelConnects">
    <xs:sequence>
     <xs:element name="RelatingSystem" type="ifc:IfcSystem" nillable="true"/>
     <xs:element name="RelatedBuildings">
      <xs:complexType>
       <xs:sequence>
        <xs:element ref="ifc:IfcSpatialElement" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:attribute ref="ifc:itemType" fixed="ifc:IfcSpatialElement"/>
       <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 IfcRelServicesBuildings
 SUBTYPE OF (IfcRelConnects);
  RelatingSystem : IfcSystem;
  RelatedBuildings : SET [1:?] OF IfcSpatialElement;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

References  References: IfcSpatialElement IfcSystem

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