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3.1.8.10.(2)
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Application
Application 1: 
Noncombustible sills and combustible floor coverings [in NFPA 80, “Fire Doors and Fire Windows,” referred to in Sentence 3.1.8.5.(2)] for door assemblies having a fire-protection rating not less than 20 min and used as closures in fire separations not required to have a fire-resistance rating more than:
This applies to buildings described in Sentence 1.3.3.2.(1) of Division A.
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Intent
Intent 1: 
Exempt certain sills and floor coverings from the application of NFPA 80 referred to in Sentence 3.1.8.4.(2) on the basis that the sills and coverings are deemed to insignificantly contribute to the spread of fire.
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