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9.33.6.5.(1) | Application | Intent |
OH1 | OS1 | OP1 |
Objective | OP1 Fire Protection of the Building |
Attribution | |
Application | Application 1: Galvanized steel or aluminum supply
ducts, in air duct distribution systems serving heating systems in
which the rated heat input does not exceed 120 kW and serving
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 damage to or premature failure
of ducts, which could lead to exposure to heat radiated from the supply duct
and furnace heat exchanger, which could lead to the ignition of combustible
building materials, which could lead to damage to the building.
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