Agreement on having at least one instance of IfcBuilding as part of the spatial structure 

Based on          IFC2x3

Initiator            ISG Meeting-Helsinki

Effects              Extended Coordination View

Date                    2007 05 23


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.

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