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Wind and Structures
  Volume 37, Number 2, August 2023 (Special Issue) pages 95-104

The 2021 Australian/New Zealand Standard, AS/NZS 1170.2:2021
John D. Holmes, Richard G.J. Flay, John D. Ginger, Matthew Mason, Antonios Rofail and Graeme S. Wood

    The latest revision of AS/NZS 1170.2 incorporates some new research and knowledge on strong winds, climate change, and shape factors for new structures of interest such as solar panels. Unlike most other jurisdictions, Australia and New Zealand covers a vast area of land, a latitude range from 11° to 47° S climatic zones from tropical to cold temperate, and virtually every type of extreme wind event. The latter includes gales from synoptic-scale depressions, severe convectively-driven downdrafts from thunderstorms, tropical cyclones, downslope winds, and tornadoes. All except tornadoes are now covered within AS/NZS 1170.2. The paper describes the main features of the 2021 edition with emphasis on the new content, including the changes in the regional boundaries, regional wind speeds, terrain-height, topographic and direction multipliers. A new 'climate change multiplier' has been included, and the gust and turbulence profiles for over-water winds have been revised. Amongst the changes to the provisions for shape factors, values are provided for ground-mounted solar panels, and new data are provided for curved roofs. New methods have been given for dynamic response factors for poles and masts, and advice given for acceleration calculations for high-rise buildings and other dynamically wind-sensitive structures.
Key Words
    Australia; New Zealand; standard; wind load; wind speed
John D. Holmes: JDH Consulting, PO Box 269, Mentone, Victoria, 3194, Australia

Richard G.J. Flay:Department of Mechanical and Mechatronics Engineering, University of Auckland, New Zealand

John D. Ginger:College of Science and Engineering, James Cook University, Townsville, Queensland, Australia

Matthew Mason:School of Civil Engineering, University of Queensland, Brisbane, Queensland, Australia

Antonios Rofail:Windtech Consultants, Bexley, New South Wales, Australia

Graeme S. Wood:Arup Group, Sydney, New South Wales, Australia

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