||extended coordination view
||23. May 2007
||ISG meeting in Helsinki
|summary||agreement on having at least one instance of IfcBuilding as part of the spatial structure
An IFC exchange file conforming to the coordination view shall have:
- minimum of one instance of IfcBuilding within the spatial structure, either
- directly assigned to IfcProject, if no IfcSite is present, or
- assigned to IfcSite.