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9.23.4.5.(1) | Application | Intent |
| OS2 | OP2 | OH1 | OS1 | OS3 |
| Objective | OS1 Fire Safety |
| Attribution | |
| Application | Application 1: Reduction in maximum spans for wood joists, rafters,
lintels and ridge beams, in wood-frame constructions to which Section 9.23. applies
[see Sentence 9.23.1.1.(1) for application of Section 9.23.],
used to support roofs with roofing materials that are heavier than:
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| Intent | Intent 1: To limit the probability of excessively long spans, which
could lead to roofs being unable to support additional loads imposed by heavier
roofing materials, which could lead to excessive movement, deformation or
damage to roofing. Where assemblies are required to provide
fire resistance, this is to limit the probability of compromised fire resistance
of the assembly, which could lead to harm to persons.
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