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BBC is the minimum path to access to and egress from: (as per definition)....
On Ground floors, the main and auxiliary lobbies are BSA. In the scenario where the building core is at the main entrance, the Occupant Area is a large open area behind and there are multiple emergency exit doors, should the BBC extend to these exits?
Thanks,
Brett
It would be helpful to see a plan, but building exits (egress corridors) should be Building Service Area.
I reviewed the plans you sent. They look very similar to Illustration 12.1 of the BOMA 2010 manual (Method B). The illustration clearly shows that exterior exits within ground floor occupant areas are included as Occupant Area. Base Building Circulation should not extend to the emergency / exterior exits.