This Standard specifies site wind speed classes for determining
design wind speeds and wind loads for NCC buildings Classes 1 and
10 within the geometric limits given in Clause 1.2. The classes are
for use in the design of housing and for design, manufacturing and
specifying of building products and systems used for housing.
Wind loads for houses not complying with the geometric limits
given in Clause 1.2 are outside the scope of this Standard.
1 Commentary on the clauses of this Standard is given in
2 A worked example for the determination of topography is given
in Appendix B.
3 Worked examples for the determination of terrain category and
shielding class are given in Appendix C.
4 A worked example for racking forces is given in Appendix
5 Where houses do not comply with the geometric and other
limitations of this Standard, use AS/NZS 1170.2.
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