Sentence 9.29.5.5.(1)

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:

• where interior finishes contribute to the required bracing or lateral support for studs, the buckling or racking of walls, which could lead to structural failure, or
• where interior finishes support or provide the substrate for required environmental separation elements, the excessive deformation, displacement or failure of such elements, which could lead to deterioration, which could lead to further compromised structural integrity.

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.