ASNZS1170.3 2003 Structural Design Actions - Snow & Ice Actions Supplement

APPENDICES

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AS/NZS 1170.3 Supp 1:2003

This Joint Australian/New Zealand Standard supplement was prepared by Joint Technical Committee BD-006, General Design Requirements and Loading on Structures. It was approved on behalf of the Council of Standards Australia on 28 March 2003 and on behalf of the Council of Standards New Zealand on 24 June 2003. It was published on 4 July 2003.

The following are represented on Committee BD-006:

• Association of Consulting Engineers Australia
• Australian Building Codes Board
• Australian Steel Institute
• Building Research Association of New Zealand
• Cement and Concrete Association of Australia
• Concrete Masonry Association of Australia
• CSIRO, Building, Construction and Engineering
• Cyclone Testing Station—James Cook University
• Electricity Supply Association of Australia
• Housing Industry Association
• Institution of Engineers Australia
• Institution of Professional Engineers New Zealand
• Master Builders Australia
• New Zealand Heavy Engineering Research Association
• Steel Reinforcement Institute of Australia
• University of Newcastle
• University of Canterbury, New Zealand
• University of Melbourne

Keeping Standards up-to-date

Standards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased.

Detailed information about joint Australian/New Zealand Standards can be found by visiting the Standards Australia web site at www.standards.com.au or Standards New Zealand web site at www.standards.co.nz and looking up the relevant Standard in the on-line catalogue.

Alternatively, both organizations publish an annual printed Catalogue with full details of all current Standards. For more frequent listings or notification of revisions, amendments and withdrawals, Standards Australia and Standards New Zealand offer a number of update options. For information about these services, users should contact their respective national Standards organization.

We also welcome suggestions for improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Please address your comments to the Chief Executive of either Standards Australia International or Standards New Zealand at the address shown on the back cover.

This Standard was issued in draft form for comment as DR 01218 (in part).

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AS/NZS 1170.3 Supplement 1:2003

Structural design actions—Snow and ice actions—Commentary (Supplement to AS/NZS 1170.3:2003)

Originated in Australia as AS 1170.3 Supp 1—1990.

Originated in New Zealand as part of NZS 4203:1992.

AS 1170.3 Supp 1—1990 and NZS 4203:1992 jointly revised, amalgamated and redesignated in part as AS/NZS 1170.3 Supp 1:2003.

COPYRIGHT

© Standards Australia/Standards New Zealand

All rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher.

Jointly published by Standards Australia International Ltd, GPO Box 5420, Sydney, NSW 2001 and Standards New Zealand, Private Bag 2439, Wellington 6020

ISBN 0 7337 5181 4

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PREFACE

This Commentary was prepared by the Joint Standards Australia/Standards New Zealand Committee BD-006, General Design Requirements and Loading on Structures, as a Supplement to AS/NZS 1170.3:2003 Structural design actions, Part 3: Snow and ice actions. This Commentary supersedes AS 1170.3—1990, Minimum design loads on structures—Snow loads—Commentary (Supplement to AS 1170.3—1990) and, in part, NZS 4203:1992, Code of practice for general structural design and design loadings for buildings (Vol. 2).

The Commentary provides background material and guidance to the requirements of the Standard.

The clause numbers of this Commentary are prefixed by the letter ‘C’ to distinguish them from references to the Standard clauses to which they directly relate. Where a Commentary to a certain Clause is non-existent, it is because no explanation of the Clause is necessary.

It also provides advice and guidance on certain types of snow loads that cannot at this stage be covered by the Standard requirements (see Appendix CB on avoidance of common problems).

Worked examples that illustrate the application of some of the requirements of the Standard are given in Appendix CD.

ACKNOWLEDGEMENT

Standards Australia wishes to acknowledge and thank the following member who has contributed significantly to this Commentary:

Professor Peter Moss.

The photographs reproduced in Appendix CB of this Commentary were originally published in HB106: Guidelines for Design of Structures in Snow Areas, produced by the Institution of Engineers Australia. They are included here courtesy of the Institution of Engineers Australia and the Kosciusko National Parks and Wildlife Service.

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CONTENTS

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APPENDICES

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