I have a question that a architect brought up to me. He is saying that on a highrise (11 stories) it is a fire code requirement to have floor control valves on both stairwells. I cannot find anything that states this in any of the NFPA books. The square foot of each floor is small and is NOT separated into zones.
Does an 11-story high-rise require floor control valves on both stairwells?
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