AS 1170.4_Earthquake Actions in Australia_2007.pdf

Comments on Building Codes for Australia

1. General a. Name of Country: Australia b. Name of Codes: AS1170.4 – Structural design Actions Part 4: Earthquake Actions in Australia --- in English --- in Original Language c. Issued by: Standards Australia d. Enforcement Year: Published in 2007 and enforced in 2008 2. Structural Design Method a. Format: (please check) □ Working Stress Design : Allowable Stress ≧ Actual Stress □ Ultimate Strength Design: Ultimate Member Strength ≧ Required Member Strength 5 Limit State Design : Ultimate Lateral Strength ≧ Required Lateral Strength □ Other Design Method : (comment) b. Material Strength (Concrete and Steel): Ultimate strength design is used in the material design Standards in Australia

c. Strength Reduction Factors: Different strength reduction factors are used depending on the action and material type with values in the range 0.6-0.9. d. Load Factors for Gravity Loadings and Load Combination: 0.9xDead Load + Ultimate Earthquake Force 1.2xGravity Load + Ultimate Earthquake Force Gravity Load = Dead Load+ 0.3x Live Load

e. Typical Live Load Values: Office Buildings : Residential Buildings:

4 kN/m2 1.5 kN/m2

f. Special Aspects of Structural Design Method

In case that your code is performance-based, please describe the fundamental seismic performance requirement. Design philosophy is to protect life and prevent collapse whilst allowing damage at the Ultimate Limit State Event.

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