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Stairwell pressurization fan room fire rating

Question asked by delgado027 on Feb 26, 2020
Latest reply on Feb 26, 2020 by delgado027

Greeting everyone, 

I have a mechanical room for a CHW DOAS unit and an adjacent room for a stair pressurization fan as shown in the attachment. The stairwell shaft Can I take out the wall dividing the two rooms, or does the fan need to be on its own room? 

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