Wind Loading Handbook For Australia

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AWES-HB-001-2012 WIND LOADING HANDBOOK FOR AUSTRALIA & NEW ZEALAND Background to AS/NZS 1170.2 Wind Actions g AUSTRALASIAN WIND ENGINEERING SOCIETY AWES-HB-001-2012 WIND LOADING HANDBOOK FOR AUSTRALIA AND NEW ZEALAND Background to AS/NZS 1170.2 Wind Actions by J.D. Holmes, K.C.S. Kwok and J.D. Nonton movie female wardrobe. Ginger with contributions from: A.P. Melbourne, P. Russell, A.W. Truong and G.S.

Wood AUSTRALASIAN WIND ENGINEERING SOCIETY, 2012 2 Published 2012 ©Australasian Wind Engineering Society (www.awes.org) Printed by: University Publishing Service The University of Sydney All rights strictly reserved. No part of this book may be reproduced without the permission of the publisher Dewey decimal classification: 624.175 ISBN: 978-0-9750376-1-4 3 Preface Recent wind events in Australia and overseas have caused catastrophic results in those affected areas, with deaths being reported as well as widespread destruction. Research and information gathered from these events have been incorporated into the latest edition of AS/NZS 1170.2 - 2011 to now represent a more realistic determination of wind actions. The Standard applies to structures ranging from 'the less sensitive to wind action to those for which dynamic response must be taken into consideration'. This Handbook was prepared by the AWES to provide background information into wind and its actions, but also into the derivation of the Standard and its contents.

It covers items such as: • Nature of wind loading • Wind speeds and multipliers • Shape factors for structures • Dynamic response In particular, it equips users with a better understanding of wind and the Standard to provide them with improved interpretation and judgment in determining wind actions on structures. Equally important, it enables the user to extend the Standard limitations while still complying with regulations, albeit other information may be necessary. It must be borne in mind: the user is ultimately responsible for their design, notwithstanding the Standard, and this Handbook exists to assist the user as far as practicable to discharge those responsibilities in the best interests of the project, the owner and the community. Leo Noicos BEng, FIEAust, CPEng, NPER, RPEQ Senior Principal Structural Engineer URS Australia Pty. 4 Disclaimer: While all due care has been taken in the collection and preparation of information in this Handbook, no responsibility is assumed by the Australasian Wind Engineering Society, or the individual authors or contributors, for any consequences arising from the use of it. The authors acknowle_dge the indirect contributions of other members of sub-Committee 80006-02 of Standards Australia/Standards New Zealand, not listed as authors or contributors on the first page, and the assistance of Steve Cochard (University of Sydney) during the production process for this book. Acknowledgements: 5 TABLE OF CONTENTS 1.

Introduction, History and Scope 1.1 Introduction 1.2 Nature of wind loading 1.3 History of Australian and New Zealand Standards on wind loading 1.3.1 History of Australian Standards 1.3.2 Previous New Zealand Standards 1.4 Scope, and determination of wind actions 1.5 Uncertainties in estimation of wind loading 1.6 Design wind pressures, forces and load cases 1.6.1 Design wind pressures 1.6.2 Wind directions 1.6.3 Frictional drag 1.6.4 Ultimate and serviceability limit states 1.6.5 Fatigue 1.6.6 Torsion 1.7 Windborne debris 2.