Do you think is it possible to change IFC structure a little bit?
The main one is:
Occurrences and types are further subdivided into six fundamental concepts: actors (“who”), controls (“why”), groups (“what”), products (“where”), processes (“when”), and resources (“how”).
I think in this way:
Who = Actor
Why = Control
What = System, Element (Product is part of Element), Part
Where = Project, Facility, FacilityPart, …, Building, BuildingPart, BuildingStory, Zone, Space
When = Processes
How = Resources
I think Product is not a good occurrence for where, where should refer to the project