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This help desk is a free resource intended for discussion purposes only. Neither BOMA, its chapters, affiliates, or Extreme Measures Inc.® are responsible for the information, comments or opinions expressed herein. For complete information, refer to the official publications of the standards themselves.

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Gross Building Area

Vic Williams
September 28, 2015

I have been asked to verify that GROSS BUILDING AREA in the ANSI/BOMA Z65.1-1996 STANDARD METHOD FOR MEASURING FLOOR AREA IN OFFICE BUILDINGS does not include outside roof overhangs. My interpretation is that it extends to the outside finish face of the enclosing exterior walls. Is this correct?


David Fingret
Extreme Measures Inc.
September 28, 2015

That is correct.


Vic Williams
September 28, 2015

Thank you for your VERY SWIFT response.

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