AS/NZS 1170.2:2011 Structural design actions, Part 2: Wind actions
Standards Australia/Standards New Zealand
Supersedes: AS/NZS 1170.2:2002 AMDT 1 Structural design actions, Part 2: Wind actions
Supersedes: AS/NZS 1170.2:2002 Structural design actions, Part 2: Wind actions
Draft Designation: DR AS/NZS 1170.2Amended by: AS/NZS 1170.2:2011 AMDT 1 Structural design actions, Part 2: Wind actions
Amended by: AS/NZS 1170.2:2011 AMDT 2 Structural design actions, Part 2: Wind actions
Amended by: AS/NZS 1170.2:2011 AMDT 3 Structural design actions, Part 2: Wind actions
Amended by: AS/NZS 1170.2:2011 Amd 4:2016 Structural design actions, Part 2: Wind actions
Amended by: AS/NZS 1170.2:2011 Amd 5:2017 Structural design actions, Part 2: Wind actions
Reconfirmed by: AS/NZS 1170.2:2011 Rec:2016 Structural design actions, Part 2: Wind actions
The objective of this Standard is to provide wind actions for use in the design of structures subject to wind action. It provides a detailed procedure for the determination of wind actions on structures, varying from those less sensitive to wind action to those for which dynamic response must be taken into consideration.
The wind speeds provided are based on analysis of existing data. No account has been taken of any possible future trend in wind speeds due to climatic change.
The terms 'normative' and 'informative' have been used in this Standard to define the application of the appendix to which they apply. A 'normative' appendix is an integral part of a Standard, whereas an 'informative' appendix is only for information and guidance.
Statements expressed in mandatory terms in notes to tables and figures are deemed to be an integral part of this Standard.
Notes to the text contain information and guidance and are not considered to be an integral part of the Standard.
The Joint Committee is currently considering possible amendments following recent severe wind events, including tropical cyclone Yasi in Australia.
Reconfirmed: 2016-12-16
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. Second edition 2011. Reissued incorporating Amendment No. 1 (September 2012). Reissued incorporating Amendment No. 2 (December 2012). Reissued incorporating Amendment No. 3 (July 2013). Reissued incorporating Amendment No. 4 (August 2016). Reissued incorporating Amendment No. 5 (June 2017).
Contents:
Section 1: General
Section 2: Calculation Of Wind Actions
Section 3: Regional Wind Speeds
Section 4: Site Exposure Multipliers
Section 5: Aerodynamic Shape Factor
Section 6: Dynamic Response Factor
Appendix A: Definitions
Appendix B: Notation
Appendix C: Additional Pressure Coefficients For Enclosed Buildings
Appendix D: Freestanding Walls, Hoardings, Canopies And Solar Panels
Appendix E: Aerodynamic Shape Factors For Exposed Structural Members, Frames And Lattice Towers
Appendix F: Flags And Circular Shapes
Appendix G: Accelerations For Wind-Sensitive Structures
General Design Requirements and Loading on Structures.
BD-006
Australian Building Codes Board; Australian Steel Institute; Australasian Wind Engineering Society; Cement Concrete and Aggregates Australia—Cement; Concrete Masonry Association of Australia; Cyclone Testing Station—James Cook University; Department of Building and Housing, New Zealand; Engineers Australia; Forest and Wood Products Australia; Housing Industry Association; Institution of Professional Engineers New Zealand; Master Builders Australia; Monash University; New Zealand Heavy Engineering Research Association; Property Council of Australia; Steel Reinforcement Institute of Australia; University of Canterbury New Zealand; University of Melbourne.
