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IfcRelConnectsStructuralActivity

Definition from buildingSMART International: The IfcRelConnectsStructuralActivity relationship connects a structural activity (either an action or reaction) to a structural member or a building element.

NOTE: The use of this entity in the modelling of the mechanical structure of a building is optional. It is only needed to associate structural representations with structural actions. However, since the location of a structural action is defined by using a topology object - which is also used by the structural member on which it acts - the explicit association of activities to structural representations is not always necessary. It is possible to determine such connections by analysing the used topology. On the other hand, this is not unambiguous in all cases, as for example by eccentric loading. Furthermore, it may result in complicated operations for the detection of the needed references. Therefore the use of this entity is strongly recommended to avoid ambiguity.

HISTORY: New entity in Release IFC2x Edition 2.

EXPRESS specification:

ENTITY IfcRelConnectsStructuralActivity
SUBTYPE OF ( IfcRelConnects);
RelatingElement  :  IfcStructuralActivityAssignmentSelect;
RelatedStructuralActivity  :  IfcStructuralActivity;
END_ENTITY;

Attribute definitions:

RelatingElement  :  Reference to an instance of IfcStructuralItem or IfcBuildingElement (or its subclasses) to which the specified action is applied.
RelatedStructuralActivity  :  Reference to an instance of IfcStructuralActivity (or its subclasses) which is acting upon the specified structural element (represented by a respective structural representation entity).

Inheritance graph

ENTITY IfcRelConnectsStructuralActivity;
ENTITY IfcRoot;
GlobalId  :  IfcGloballyUniqueId;
OwnerHistory  :  IfcOwnerHistory;
Name  :  OPTIONAL IfcLabel;
Description  :  OPTIONAL IfcText;
ENTITY IfcRelationship;
ENTITY IfcRelConnects;
ENTITY IfcRelConnectsStructuralActivity;
RelatingElement  :  IfcStructuralActivityAssignmentSelect;
RelatedStructuralActivity  :  IfcStructuralActivity;
END_ENTITY;