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9.33.6.6.(5) | Application | Intent |
| OH1 | OS2 | OS1 | OP1 |
| Objective | OP1 Fire Protection of the Building |
| Attribution | |
| Application | Application 1: Openings in 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 joints opening, which could
lead to combustible building elements being exposed to heat radiated from
furnace heat exchangers, which could lead to fire, which could lead to damage
to the building. |
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