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smoke barriers in an existing healthcare occupancy

Question asked by steve.verner on Nov 14, 2019
Latest reply on Nov 14, 2019 by milt.werner

Exhibit 18/19.17 shows an example that if a business occupancy is below a healthcare floor, the smoke barrier needs to extend through the floor below. However 19.3.7.1 commentary says that smoke barriers are only required in existing healthcare if there are sleeping rooms and treatment areas do not require the 22.5KSF compartmentalization. Does that mean that if a healthcare sleeping floor is above a healthcare treatment floor, the compartmentalization would follow through that floor but if the non-sleeping healthcare treatment floor is above a business occupancy, that business floor would not need to be compartmentalized? The exhibit example would be if 7B was healthcare with sleeping, then 6B (a healthcare treatment floor) would need to be compartmentalized due to healthcare above but the 5B business occupancy would not if I understand this correctly.

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