Intent 1:
To limit the probability of an inadequate withdrawal
resistance, which could lead to inadequate support for cladding, which
could lead to an inability to resist:
- gravity loads and lateral wind loads, or
- where panel-type siding is installed as bracing to satisfy Subclause 9.23.13.1.(2)(a)(i) and Clause 9.23.13.6.(1)(a), lateral loads,
which could lead to racking of exterior walls.
This is to limit the probability of the displacement of
cladding, trim and flashing, opening of joints or failure of caulking,
which could lead to:
- precipitation or meltwater ingress, or
- compromised thermal performance of components intended
to provide resistance to heat transfer.
This is to limit the probability of:
- an inadequate control of temperatures of interior spaces
or relative humidity,
- the generation of pollutants from biological growth
or from materials that become unstable on wetting,
- deterioration, which could lead to compromised integrity
of exterior walls or elements protected by exterior walls, or
- water accumulation in interior spaces.
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.