Wind Actions to AS/NZS 1170.2:2002

by Engineers' Compendium

The procedures and formulas processed by the forms on this site are based on the Joint Australian/New Zealand Standard AS/NZS 1170.2:2002 Structural design actions, Part 2: Wind actions. To view a Digest of the standard, click here (opens in new window). The Digest includes cue cards for processing the formulas with MATHSERV.

This Online Program or the Digest should NOT be referenced without having access to the code. They are NOT a substitute for the code but are my personal interpretation of the code. Clause and Table numbers refer to AS/NZS 1170.2:2002 unless otherwise noted.

Procedure For Determining Wind Actions

1. Step 1: determine the design wind speeds from Section 3 - Regional Wind Speeds, and Section 4 - Site Exposure Multipliers;
    
2. Step 2: determine design wind pressures from Section 5 - Aerodynamic Shape Factors, and Section 6 - Dynamic Response Factors;
    
3. Step 3: calculate wind actions from Section 2 - Calculation of Wind Actions, being the vector sum of the forces calculated from the design pressures applied to surface areas or structural elements.

Results from Step 1: (You may change these manually here. If you do, please ensure that number of elements match in each field. Also, please click "Save data if changed manually" to ensure your changes are passed on.)

Step 2 is subdivided into the following types of structure:

1. enclosed rectangular buildings;
2. circular bins, silos and tanks;
3. freestanding walls, hoardings, canopies and roofs;
4. exposed structural members, frames and lattice towers;
5. flags and circular shapes;

To be continued...
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