How are site boundaries meant to be stored?

@Moult Maybe we should talk with someone from the IFC for Site, Landscape, and Urban Planning – call for participation - buildingSMART International. Any idea of the status of this call @jwouellette ?

Some of these concepts could also get covered by the future implementation of IfcSpatialZone, as established in the proposed clusters from the Spatial Zone Project:

    * Definition / Declaration
    * Regulation / Validation

As many of them are out of the hierarchical structure of the corresponding domains (IFC Road, IFC Building, IFC Airport, …), there is a need to cover them crosswise.

I hope we can discuss these topics in Rome, too.