Circular Stair in existing high rise Bldg

Gents,

Happy holidays.

 

Your insights are highly appreciated for the following queries pertaining to the building code requirements for an existing high rise circular exterior stairways: smoke proof enclosure, Staircase Pressurization and smoke control system, such existing high rise Bldg ( 12 Stories) has آ three exterior staircases and one inner enclosed closed آ stairways.

 

 

 

 

JABER AL-HAJI

hajijm@yahoo.com

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