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Two-storied office - stairs

Olga Skhanova
Renaissance Development
May 29, 2013


on the last 2 floors of 61-storied building there is supposed to be two-storied office with internal stairs. Should these stairs be included in major vertical penetrations area or it can be occupant area? On both floors? Or on the second it should be void?
On both floors there are also building's fire staris and lifts.

Thank you

Adam Fingret
Extreme Measures Inc.
May 29, 2013

Hi Olga,

If the internal stairs could feasibly be removed without affecting normal access and egress on the floors, I think it is reasonable to consider the stairs an Occupant Void (see page 26 of the Standard) in which case they are included in Occupant Area. If however, the stairs are providing a primary circulatory function, then it is more pruduent to assign the stairs as Major Vertical Penetrations, in which case the penetration would exist on both floors.

Olga Skhanova
Renaissance Development
May 30, 2013


Thank you very much

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