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9.21.3.1.(1) | Application | Intent |
| OS2 | OH1 | OS1 | OS3 | OP1 |
| Objective | OS2 Structural Safety |
| Attribution | |
| Application | Application 1: Liner materials 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, 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 the direct exposure of chimney
components to corrosive flue gases and condensates, and extreme fluctuations
in temperature, will lead to the premature failure of chimney liners, which
could lead to the structural failure of masonry or concrete chimneys, which
could lead to harm to persons. |
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