||Coordination view version 2.0
||official buildingSMART certification 2.0 program
|summary||agreement on the correct use of shape representation types for elements and its features (openings, projections)|
For applying features to an element using the Boolean Difference implied by IfcRelVoidsElement, or the Boolean Union implied by IfcRelProjectsElement
it has to be ensured, that
- both, the relating element (subtype of IfcElement) and the related feature (IfcOpeningElement, or IfcProjectionElement), shall have a 'Body' shape representation
- the 'Body' shape representation shall be a true solid, the use of 'SurfaceModel' geometry (e.g. IfcShallBasedSurfaceModel, or IfcFaceBasedSurfaceModel) is not allowed.