9.23.9.1.(1)

Intent 1:

To limit the probability of an inability to resist expected gravity loads, which could lead to:

• crushing of floor joists, and sill plates or beams,
• inadequate support for floor joists,
• where not embedded in a foundation, the separation of joists from supporting members, or
• where not embedded in a foundation, but end-nailed, strapped or blocked, the twisting of joists.

This is to limit the probability of the excessive movement, deformation or failure of floor assemblies.

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.