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9.21.3.8.(1) | Application | Intent |
| OP1 | OS2 | OS1 |
| Objective | OS1 Fire Safety |
| Attribution | |
| Application | Application 1: Minimum clearance between chimney
liners for rectangular masonry or concrete chimneys that
are not more than 12 m in height and that serve fireplaces or appliances having a combined total rated heat output
of 120 kW or less, and surrounding masonry, 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 rectangular masonry
or concrete chimneys, in buildings to which
Part 6 applies [see Sentence 1.3.3.2.(1) of Division A for application
of Part 6], as stated in Sentence 6.3.1.2.(1). |
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| Intent | Intent 1: To limit the probability that an inadequate clearance will
lead to excessive heat transfer from chimney liners to surrounding masonry,
which could lead to the ignition of combustible building components, which
could lead to harm to persons. |
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