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 wood-frame construction supports or is part of an
environmental separator, this is to limit the probability of the displacement
or failure of required environmental separation elements, which could
lead to:
- condensation,
- precipitation ingress,
- excessive heat transfer,
- pollutant ingress, or
- compromised thermal performance of components intended
to resist heat transfer.
This is to limit the probability of:
- inadequate control of temperatures of interior spaces,
drafts, relative humidity or water accumulation,
- the generation of pollutants from biological growth
or from materials that become unstable on wetting, or
- deterioration, which could lead to further compromised
integrity of environmental separators.
This is to limit the probability of:
- negative effects on the air quality of indoor spaces,
- the inadequate thermal comfort of persons, and
- contact with moisture.
This is to limit the probability of harm to persons.