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9.20.13.8.(1) | Application | Intent |
OS2 | OP2 | OH1 | OS1 |
Objective | OS1 Fire Safety |
Attribution | |
Application | Application 1: Drainage of cavities in cavity
walls, and of cavities or air spaces in masonry veneer walls, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9]:
Exceptions:
except as stated in Sentence 9.20.1.1.(2), which applies to buildings other than described above, or where the masonry
is designed for specified loads on the basis of ultimate and serviceability
limit states.
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Intent | Intent 1: To limit the probability of inadequate provision for drainage,
which could lead to water pooling in cavities or air spaces for extended periods.
Where masonry veneer is installed to provide the required noncombustible
cladding, this is to limit the probability of deterioration, which could lead
to compromised fire resistance of the assembly, which could lead to harm to
persons.
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