Agreement to use standard shape representation type names "Axis", "FootPrint" also for IfcStairFlight and IfcRampFlight
Based on IFC2x3
Initiator Official buildinSMART IFC2x3 CV2.0 certification programme
Effects Coordination View 2.0
Date 2011 09
In order to rationalize the use of representation types, IfcShapeRepresentation.RepresentationType to have it consistently as "Axis" for a line based representation, and "FootPrint" for ground floor the agreement of correct use of representation types for IfcStairFlight and IfcRampFlight is altered.
The current definition from the IFC2x3 specification for IfcShapeRepresentation for IfcStairFlight and IfcRampFlight is as following:
* WalkingLine: A two-dimensional open curve, IfcBoundedCurve, defining the walking line for the stair flight.
* Boundary: A two-dimensional closed curve, IfcBoundedCurve, defining the boundary of the stair flight.
The new Implementer Agreement CV-2x3-168 introduces the renaming of the representation type names into:
IfcShapeRepresentation.RepresentationIdentifier : 'Axis'
IfcShapeRepresentation.RepresentationType : 'Curve2D', 'GeometricCurveSet'
IfcShapeRepresentation.RepresentationIdentifier : 'FootPrint'
IfcShapeRepresentation.RepresentationType : 'GeometricCurveSet'