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ISO 4354:2009

(Main)

Wind actions on structures

Wind actions on structures

ISO 4354:2008 describes the actions of wind on structures and specifies methods of calculating characteristic values of wind loads for use in designing buildings, towers, chimneys, bridges and other structures, as well as their components and appendages. The loads are suitable for use in conjunction with ISO 2394 and other International Standards concerned with wind loads. In particular, ISO 4354:2008 facilitates the conversion between peak- and mean-wind-speed methodologies and covers the three main storm types, synoptic winds, thunderstorms and tropical cyclones (hurricanes and typhoons). ISO 4354:2008 provides the basic methods from which to determine wind loading analytically through the determination of design pressures or orthogonal along-wind and cross-wind forces and moments for structures of simple shape and wind directionality effects, and through wind tunnel or computational determinations of pressure, forces and moments for structures with complex shapes and wind directionality effects resulting in complex combinations of forces and moments. Two methods of analytical determination of design wind loads are given, one based on a peak velocity and the other on a mean velocity.

Actions du vent sur les structures

General Information

Status
Published
Publication Date
03-Jun-2009
ICS
91.080.01 - Structures of buildings in general
Technical Committee
ISO/TC 98/SC 3 - Loads, forces and other actions
Drafting Committee
ISO/TC 98/SC 3 - Loads, forces and other actions
Current Stage
9092 - International Standard to be revised
Completion Date
16-Oct-2023
Ref Project

Relations

Revises
ISO 4354:1997 - Wind actions on structures
Effective Date
15-Apr-2008

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ISO 4354:2009 - Wind actions on structures
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Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 4354
Second edition
2009-06-01

Wind actions on structures
Actions du vent sur les structures




Reference number
ISO 4354:2009(E)
©
ISO 2009

---------------------- Page: 1 ----------------------
ISO 4354:2009(E)
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©  ISO 2009
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
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ii © ISO 2009 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 4354:2009(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Symbols.2
4 Wind actions .2
5 Wind pressure.3
6 Wind force .3
7 Site peak dynamic pressure.4
8 Exposure factor .4
9 Pressure and force coefficients.4
10 Dynamic response factor.5
11 Criterion for aeroelastic instability .5
12 Methods of determination of wind loads .5
Annex A (normative) Mean velocity method.7
Annex B (informative) Determination of reference wind speed .9
Annex C (informative) Determination of exposure factors .11
Annex D (informative) Aerodynamic pressure and force coefficients .22
Annex E (informative) Dynamic response factors.40
Annex F (informative) Structures subject to critical excitation vortex resonance and aeroelastic
instability.59
Annex G (informative) Mode combinations.
...

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