Intent 1:
To limit the probability that low-strength interior
finishes will be relied on to provide lateral restraint, which could
lead to an inability to resist expected gravity or lateral loads or
shrinkage stresses due to drying, which could lead to joists twisting,
which could lead to failure of the ceiling.
This
is to limit the probability of compromised structural integrity, which
could lead to:
- the structural collapse of wood-frame construction,
- where roof and ceiling framing members support required
elements of environmental separators, the excessive deformation, displacement
or failure of these elements, which could lead to deterioration, which
could lead to further compromised structural integrity of roofs or
environmental separators, or
- where roof and ceiling framing members support assemblies
exposed to the exterior, excessive water ingress, which could lead
to deterioration.
This is to limit the probability of harm to persons.