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9.33.6.4.(1) | Application | Intent |
| OS1 | OP1 |
| Objective | OS1 Fire Safety |
| Attribution | |
| Application | Application 1: Noncombustibility of coverings, linings and associated
adhesives and insulation of air ducts, plenums and
other parts of air duct systems exposed to heated air or radiation from heat
sources that would result in the exposed surface exceeding a temperature of
120°C, where the systems serve only one dwelling
unit, in buildings to which Part 9 applies
[see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
Application 2: This also applies to ventilation ducts and their fittings,
as stated in Sentence 9.32.3.11.(1). |
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| Intent | Intent 1: To limit the probability of the ignition of combustible
material, which could lead to the spread of fire and smoke throughout the
building, which could lead to harm to persons. |
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