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9.21.4.9.(2) | Application | Intent |
| OS2 | OH1 | OS3 | OS1 |
| Objective | OS2 Structural Safety |
| Attribution | |
| Application | Application 1: Prevention of the lateral displacement of flue liners
in the same rectangular chimney of brick masonry
or concrete, which is not more than 12 m in height and serves
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 joints between flue liner
sections will open, which could lead to the leakage of condensate and combustion
products into the surrounding masonry, which could lead to the structural
damage and collapse of the chimney due to corrosion or freeze-thaw stresses,
which could lead to harm to persons. |
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