IFC (IFC4X3_ADD2) development


Semantic definition

Total gross area of the outer surfaces of the roof, projected tp the ground. It is the sum of all projected roof slab gross areas. Roof openings, like sky windows and other openings and cut-outs are not taken into account.

Referenced in
Table 40b6dc26-2bff-4511-adea-54f00a55a083

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