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9.22.5.2.(2) | Application | Intent |
| OS1 | OP1 |
| Objective | OP1 Fire Protection of the Building |
| Attribution | |
| Application | Application 1: Hearths for masonry fireplaces constructed on-site
whose opening is raised not less than 200 mm from a combustible floor,
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 fireplaces 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 6.2.1.5.(1). |
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| Intent | Intent 1: To limit the probability that heat radiating from the fireplace
opening to a hearth that rests directly on a combustible floor will raise
the hearth temperature excessively, which could lead to the ignition of combustible
building components, which could lead to damage to the building.
Intent 2: To exempt certain fireplaces from the application of Sentence 9.22.5.2.(1), where the fireplace opening is raised sufficiently above
a combustible floor to reduce the risk of raising the hearth temperature excessively.
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