The Equivalent Lateral Force method is an alternative (simplified) approach for determining distribution of seismic base shear force on the height of regular, multistory building. This method is the most commonly used design procedure allowing determination of design seismic forces by a linear elastic static analysis of the structure.
The Equivalent Lateral Force method allows seismic analysis according the following national codes:
- Australia AS 1170.4 - 2007 Earthquake actions in Australia.
- Europe EC8 1998-1:2005 Eurocode 8. Design of structures for earthquake resistance
- United States ASCE 7-10 Minimum Design Loads for Buildings (recalled in the IBC 2009 requirements)
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