Intent 1:
To limit the probability of:
- inadequate support for roof joists and rafters, which
could lead to an inability to resist expected gravity loads, which
could lead to crushing, or
- insufficient area for fastening, which could lead to
an inability to resist expected lateral or wind-uplift loads, which
could lead to the separation of roofs from walls.
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.