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This building is an H-1 occupancy. There is an area of refuge on the 4th floor. The shelter-in-place Class 3 area of refuge is protected from interior and exterior hazards. There are vertical openings through all 4 floors. The UFC is governing.
Based on this, do the stairwells need to be intertied directly to the shelter-in-place area of refuge for an exit enclosure that is a direct accessible means of egress (we are providing accessibility provisions)? Does the shelter-in-place area need to be a smoke enclosure as well as the interconnected stairwell system? Based on this will both the stairwell and the shelter-in-place need to be pressurized to meet design intent? Both exterior and interior air is hazardous and a scrubber would be needed to inject air for stairwell pressurization. Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe
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