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9.29.5.9.(1) | Application | Intent |
| OS2 | OP2 | OH1 | OS1 | OP1 |
| Objective | OS1 Fire Safety |
| Attribution | |
| Application | Application 1: Maximum spacing of screws in single-layer installations
of gypsum board interior ceiling finishes on wood furring or framing, 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 9.29.5.9.(2), which applies to
perimeter fastening of ceiling sheets that are supported by the wall sheets
around the perimeter of the ceiling.
Application 2: This also applies to the protection of foamed plastics
that form part of a wall or ceiling assembly in combustible
construction:
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| Intent | Intent 1: To limit the probability of inadequate support for gypsum
board, which could lead to an inability to resist expected gravity loads.
This is to limit the probability of the deformation or detachment
of interior finishes, which could lead to:
This is to limit the probability of the growth and spread of fire,
which could lead to harm to persons.
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