Intent 1:
To limit the probability of fastening cladding to
an inappropriate substrate.
This is to limit the
probability of:
- an inadequate resistance to expected 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), an inadequate
resistance to expected lateral loads, which could lead to racking
of exterior walls.
This is to limit the probability of:
- the displacement of cladding, trim and flashing, the
opening of joints or the failure of caulking, which could lead to
precipitation or meltwater ingress, which could lead to deterioration,
which could lead to the structural failure of exterior walls or elements
protected by exterior walls,
- falling cladding components, 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), structural
failure.
This is to limit the probability of harm to persons.