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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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Storage space under stairs

Sopheap Hille
Burgess Design, Inc.
May 2, 2017

I have an office building that's 2 story tall. There's a tenant on the first floor that is using a storage space underneath the staircase (finished out with doors, wall and lights). My question is how would I measure the vertical penetration and tenant storage at this area?

thank you.

David Fingret
Extreme Measures Inc.
May 2, 2017

Hi Sopheap

BOMA 2010 Office does not allow it, unless it is a monumental stair (a stair within a void). If the stair is fully enclosed by fire-resistive walls then it all of it is Major Vertical Penetration.

I suppose you could measure the storage area separately and charge for it, but it would not be within the framework of the BOMA 2010 Office Standard.


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