Sentence 3.6.5.8.(4)

  1. OS1

Objective

OS1 Fire Safety

Attribution

Intent

Intent 1:

To limit the probability that combustible debris accumulating in certain horizontal locations in combustible return ducts will not be isolated or separated from the combustible surface of the duct by a duct lining of noncombustible material, which could lead to a fire involving the debris igniting the duct and then spreading to other parts of the building, which could lead to harm to persons.

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