|Ordnet zu - Relation|
The association relationship IfcRelAssociates refers to sources of information (most notably a
classification, library, document, approval, contraint, or material). The information associated may reside
internally or externally of the project data. There is no dependency implied by the association.
EXAMPLE Further external information may be provided to the tank equipment (as subtype of IfcProduct)
in terms of its classification and instruction documents, the source of the additional information is held external
to the project data model.
Association relationships can be established to objects (occurrences as subtypes of IfcObject) or to types
(as subtypes of IfcTypeObject). Some associations (such as approval, or document) may also be applied to
property templates (as subtypes of IfcPropertyDefinition).
EXAMPLE The classification information for the storage tank equipment may be associated to the
IfcTankType (subtype of IfcTypeObject), defining the specific information for all occurencies of
that tank in the project. Therefore the association of the Uniclass notation 'L6814' may be associated by a
subtype of IfcRelAssociates to the type information.
EXAMPLE The classification information for a particular space within a building may be associated
to the IfcSpace object (subtype of IfcObject), defining a particular occurrence of
space. Therefore the association of the DIN notation 'NF 1.5' may be associated by a subtype of
IfcRelAssociates to the object.
The association relationship establishs an association between one to many objects or property templates and the
associated information. The subtypes of IfcRelAssociates establish the particular semantic meaning of the association relationship.
HISTORY New entity in IFC2x.
IFC4 CHANGE Entity has been changed into an ABSTRACT supertype
XSD Specification: <xs:element name="IfcRelAssociates" type="ifc:IfcRelAssociates" abstract="true" substitutionGroup="ifc:IfcRelationship" nillable="true"/>
<xs:complexType name="IfcRelAssociates" abstract="true">
<xs:group ref="ifc:IfcDefinitionSelect" maxOccurs="unbounded"/>
<xs:attribute ref="ifc:itemType" fixed="ifc:IfcDefinitionSelect"/>
<xs:attribute ref="ifc:cType" fixed="set"/>
<xs:attribute ref="ifc:arraySize" use="optional"/>
|RelatedObjects|| : ||
Set of object or property definitions to which the external references or information is associated. It includes object and type objects, property set templates, property templates and property sets and contexts.
IFC4 CHANGE The attribute datatype has been changed from IfcRoot to IfcDefinitionSelect.
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