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9.33.6.7.(5) | Application | Intent |
OS1 | OP1 |
Objective | OS1 Fire Safety |
Attribution | |
Application | Application 1: Minimum clearance for combustible ducts
in concrete slabs-on-ground that are connected to a furnace supply plenum 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 exposure to hot air in the vicinity
of furnace heat exchangers, to heat radiated from furnace heat exchangers,
or to embers or flames from objects dropped into registers, which could lead
to the ignition of combustible duct material, which could lead to harm to
persons. |
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