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9.22.5.1.(2) | Application | Intent |
| OS1 | OP1 |
| Objective | OS1 Fire Safety |
| Attribution | |
| Application | Application 1: Minimum hearth dimensions for masonry fireplaces constructed
on-site, where the fire chamber floor is elevated more than 150 mm above
the hearth, 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 the expulsion of burning embers
from the fire chamber onto floor surfaces will lead to the ignition of combustible
building components in the vicinity of the raised fireplace opening, which
could lead to harm to persons. Intent 2: To supersede the requirement stated in Sentence 9.22.5.1.(1),
where the probability of burning embers being expelled from the fire chamber
and contacting the floor surface is increased. |
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