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9.29.5.5.(1) | Application | Intent |
| OS2 | OS1 | OH1 | OP2 |
| Objective | OS2 Structural Safety |
| Attribution | |
| Application | Application 1: Minimum length of fasteners for nailed and screwed
single-layer installations of gypsum board interior wall and 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 for assemblies required to have a fire-resistance
rating, where it can be shown, on the basis of fire tests, that lesser
depths of nail penetration are adequate for the required rating.
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| Intent | Intent 1: To limit the probability of an inadequate penetration of
fasteners, which could lead to an inability to resist expected impact, gravity
or lateral 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 harm to persons.
Intent 2: To exempt assemblies from the application of this Sentence,
where fire tests have proven that shorter nails or screws will be adequate
for the required fire-resistance rating. |
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