IfcRelAssignsToGroupByFactor

Natural language names
deWeist Gruppe mit Faktor zu - Relation
enRel Assigns To Group By Factor
frAssociation à un groupe avec pondération
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4
    IfcRelAssignsToGroupByFactorADDED
Semantic definitions at the entity
Entity definition

The objectified relationship IfcRelAssignsToGroupByFactor is a specialization of the general grouping mechanism. It allows to add a factor to define the ratio that applies to the assignment of object definitions (individual object occurrences as subtypes of IfcObject and object types as subtypes of IfcTypeObject) to a group (subtypes of IfcGroup).

The ratio can be used to define a percentage assignment. For example, a Factor of 0.8 would indicate that the object is assigned by 80% to the group, or a Factor of 2.5 would indicate the object is assigned with a weight factor of 2.5 to the group.

NOTE  Examples of factored groups include the assignment of load cases in a load combination in structural analysis, or the assignment of spaces by percentage to different rental zones.

The same object or object type may be included with the same or different Factor values to many groups. Grouping relationships are not hierarchical.

HISTORY  New entity in IFC4.
Attribute definitions
#AttributeTypeCardinalityDescription C
8FactorIfcRatioMeasure[1:1] Factor provided as a ratio measure that identifies the fraction or weighted factor that applies to the group assignment.X
Inherited definitions from supertypes
Entity inheritance IfcRelAssignsToGroup IfcRelAssigns IfcRelationship IfcRoot
Attribute inheritance
#AttributeTypeCardinalityDescriptionC
IfcRoot
1GlobalIdIfcGloballyUniqueId[1:1] Assignment of a globally unique identifier within the entire software world. X
2OwnerHistoryIfcOwnerHistory[0:1] 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.
X
3NameIfcLabel[0:1] 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[0:1] Optional description, provided for exchanging informative comments.X
IfcRelationship
IfcRelAssigns
5RelatedObjectsIfcObjectDefinitionS[1:?] Related objects, which are assigned to a single object. The type of the single (or relating) object is defined in the subtypes of IfcRelAssigns.X
6RelatedObjectsTypeIfcObjectTypeEnum[0:1] Particular type of the assignment relationship. It can constrain the applicable object types, used within the role of RelatedObjects. X
IfcRelAssignsToGroup
7RelatingGroupIfcGroup[1:1] Reference to group that contains all assigned group members. X
IfcRelAssignsToGroupByFactor
8FactorIfcRatioMeasure[1:1] Factor provided as a ratio measure that identifies the fraction or weighted factor that applies to the group assignment.X
Definitions applying to Common Use Definitions

Concept inheritance

#ConceptModel View
IfcRoot
Software IdentityCommon Use Definitions
Revision ControlCommon Use Definitions
Formal representations
XSD Specification
 <xs:element name="IfcRelAssignsToGroupByFactor" type="ifc:IfcRelAssignsToGroupByFactor" substitutionGroup="ifc:IfcRelAssignsToGroup" nillable="true"/>
 <xs:complexType name="IfcRelAssignsToGroupByFactor">
  <xs:complexContent>
   <xs:extension base="ifc:IfcRelAssignsToGroup">
    <xs:attribute name="Factor" type="ifc:IfcRatioMeasure" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcRelAssignsToGroupByFactor
 SUBTYPE OF (IfcRelAssignsToGroup);
  Factor : IfcRatioMeasure;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

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