IfcStructuralAction

Definition from IAI: A structural action is a structural activity that acts upon a structural item or building element.

HISTORY: New entity in Release IFC2x Edition 2.

Example:
The following figure illustrates the rationale for the use of the attribute 'CausedBy' for the representation of the dependencies between actions and action results. The given simplified structure contains two mechanical models that are analyzed independently, but do influence each other.

Illustration of the usage of the reference attribute 'CausedBy' in the entity IfcStructuralAction.

EXPRESS specification:

ENTITY IfcStructuralAction

ABSTRACT SUPERTYPE OF

(ONEOF(IfcStructuralPointAction, IfcStructuralLinearAction, IfcStructuralPlanarAction))

SUBTYPE OF (

IfcStructuralActivity);

DestabilizingLoad

BOOLEAN;

CausedBy

OPTIONAL IfcStructuralReaction;

END_ENTITY;

Attribute definitions:

DestabilizingLoad	:	Indicates if this action may cause a stability problem. If it is 'FALSE', no further investigations regarding stability problems are necessary.
CausedBy	:	Optional reference to an instance of IfcStructuralReaction representing a result of another structural analysis model which creates this action upon the considered structural analysis model.

Inheritance graph

ENTITY IfcStructuralAction;

ENTITY IfcRoot;

GlobalId

IfcGloballyUniqueId;

OwnerHistory

IfcOwnerHistory;

Name

OPTIONAL IfcLabel;

Description

OPTIONAL IfcText;

ENTITY IfcObjectDefinition;

INVERSE

HasAssignments

SET OF IfcRelAssigns FOR RelatedObjects;

IsDecomposedBy

SET OF IfcRelDecomposes FOR RelatingObject;

Decomposes

SET [0:1] OF IfcRelDecomposes FOR RelatedObjects;

HasAssociations

SET OF IfcRelAssociates FOR RelatedObjects;

ENTITY IfcObject;

ObjectType

OPTIONAL IfcLabel;

INVERSE

IsDefinedBy

SET OF IfcRelDefines FOR RelatedObjects;

ENTITY IfcProduct;

ObjectPlacement

OPTIONAL IfcObjectPlacement;

Representation

OPTIONAL IfcProductRepresentation;

INVERSE

ReferencedBy

SET OF IfcRelAssignsToProduct FOR RelatingProduct;

ENTITY IfcStructuralActivity;

AppliedLoad

IfcStructuralLoad;

GlobalOrLocal

IfcGlobalOrLocalEnum;

INVERSE

AssignedToStructuralItem

IfcRelConnectsStructuralActivity FOR RelatedStructuralActivity;

ENTITY IfcStructuralAction;

DestabilizingLoad

BOOLEAN;

CausedBy

OPTIONAL IfcStructuralReaction;

END_ENTITY;