IfcDiameterDimension

Definition from IAI: The diameter dimension is a draughting callout that presents the diameter extent of a conic element. It consists of a dimension curve and may have projection curves (but is often defined without projection curves).

> NOTE: The dimension text is handled through the IfcStructuredDimensionCallout and associated via the IfcDimensionCalloutRelationship.

Illustration:

> NOTE: The IfcDiameterDimension is an entity that had been adopted from ISO 10303, Industrial automation systems and integration—Product data representation and exchange, Part 202: Application protocol: Associative draughting.

> NOTE Corresponding STEP name: diameter_dimension. Please refer to ISO/IS 10303-202:1994 page 487 for the final definition of the formal standard.

> HISTORY New entity in Release IFC2x 2nd Edition.

EXPRESS specification:

ENTITY IfcDiameterDimension
SUBTYPE OF ( | IfcDimensionCurveDirectedCallout);
END_ENTITY;

Inheritance graph

ENTITY IfcDiameterDimension;
ENTITY IfcRepresentationItem;
INVERSE
LayerAssignments | : | SET OF IfcPresentationLayerAssignment FOR AssignedItems;
StyledByItem | : | SET [0:1] OF IfcStyledItem FOR Item;
ENTITY IfcGeometricRepresentationItem;
ENTITY IfcDraughtingCallout;
Contents | : | SET [1:?] OF IfcDraughtingCalloutElement;
INVERSE
IsRelatedFromCallout | : | SET OF IfcDraughtingCalloutRelationship FOR RelatedDraughtingCallout;
IsRelatedToCallout | : | SET OF IfcDraughtingCalloutRelationship FOR RelatingDraughtingCallout;
ENTITY IfcDimensionCurveDirectedCallout;
ENTITY IfcDiameterDimension;
END_ENTITY;