AS/NZS 1170.2:2002

Provides design values of wind actions for use in structural design. It is intended to be used in conjunction with AS/NZS 1170.0, which gives the procedure for structural design. Wind speeds and direction factors are provided for a range of probabilities of exceedance. Other factors cover the environment around the structure, the geometry of the structure and the dynamic interaction of the structure with the wind.

This Standard sets out procedures for determining wind speeds and resulting wind actions to be used in the structural design of structures subjected to wind actions other than those caused by tornadoes.The Standard covers structures within the following criteria:(a) Buildings less than 200 m high.(b) Structures with roof spans less than 100 m.(c) Structures other than offshore structures, bridges and transmission towers.NOTES: 1 This Standard is a stand-alone document for structures within the above criteria. It may be used, in general, for all structures but other information may be necessary. Guidance on wind tunnel testing, reliable references and alternative data is given in AS/NZS 1170.2 Supp 1,Structural design actions—Wind actions—Commentary (Supplement to AS/NZS 1170.2:2002).2 Where structures have natural frequencies less than 1 Hz, Section 6 requires dynamic analysis to be carried out (see Section 6).

Originated in Australia as part of AS CA1-1933.
Originated in New Zealand as part of NZS 1900:1964.
Previous Australian edition AS 1170.2-1989.
Previous New Zealand edition NZS 4203:1992.
AS 1170.2-1989 and NZS 4203:1992 jointly revised, amalgamated and redesignated in part as AS/NZS 1170.2:2002.
Reissued incorporating Amendment No. 1 (April 2005).