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9.29.5.9.(7) | Application | Intent |
| OS2 | OP2 | OH1 | OS3 | OS1 | OH4 | OP1 | OP3 |
| Objective | OP3 Protection of Adjacent Buildings from Fire |
| Attribution | |
| Application | Application 1: Installation of screws in 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]. 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 damaging the paper facing and
crushing the gypsum board, which could lead to inadequate support for gypsum
board, 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--where
interior finishes are installed to contribute to the required fire resistance
of exterior walls--a loss of fire resistance.
This is to limit the probability of compromised fire resistance
of walls, which could lead to insufficient fire resistance, which could lead
to the spread of fire from the building to an adjacent building during the
time required for emergency responders to perform their duties.
This is to limit the probability of damage to adjacent buildings.
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