engineerfin
Automotive
On 2hr stair towers, with 90 min doors, do the thresholds need to be special or can they be undercut. I didn't see anything in nfpa 80
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NFPA 80
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stookeyfpe
Specifier/Regulator
Does the shaft have a stair pressurization system?
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engineerfin
Automotive
p.s. what determines if the stairway tower needs to be pressurized.
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