Intent 1:
To limit the probability that OSB cladding will
not be strong enough or rigid enough.
This is
to limit the probability of:
- an inadequate resistance to accidental impact forces
or wind loads, which could lead to excessive deflection, the deformation,
displacement or cracking of cladding, the opening of joints, or the
failure of caulking, or
- where support spacing does not exceed 400 mm and panel-type plywood cladding is installed as bracing to satisfy Subclause 9.23.13.1.(2)(a)(i) and Clause 9.23.13.6.(1)(a), an inability
to resist lateral loads, which could lead to racking of exterior walls.
This is to limit the probability of:
- precipitation or meltwater ingress, which could lead
to deterioration, which could lead to the structural failure of exterior
walls or of elements supported or protected by exterior walls,
- falling cladding elements, or
- where panel-type cladding is installed as bracing to
satisfy Subclause 9.23.13.1.(2)(a)(i) and Clause 9.23.13.6.(1)(a):
- structural failure, or
- the excessive deformation, displacement or failure of
required environmental separation elements, which could lead to deterioration,
which could lead to compromised structural integrity of exterior walls
or of elements supported or protected by exterior walls.
This is to limit the probability of harm to persons.