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
3 Comments
SC1965
5/29/2020 10:23:40 am
Are you allowed to construct a 4 story H-1 structure? IBC by reference of the UFC would only allow a 1 story of this occupancy type correct?
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Justin Milne
5/29/2020 11:34:14 am
For specialty industrial high-hazard occupancy applications, AM&M can allow with appropriate safeguards.
Reply
Brian Gerdwagen
5/29/2020 11:37:26 am
It sounds like maybe a one-story structure with three levels of mezzanine?
Reply
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