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Horizontal elastic design spectral accelerations S, The function of the Design Response Spectrum curve is specified in seismic design codes and spectral response acceleration parameters are used to create this function. In the Design Response Spectrum curve, the spectral accelerations corresponding to 1-s period and corner periods are used to determine these parameters.
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Horizontal Design Response Spectrum is used to consider earthquake effects that results in the largest maximum response to horizontal ground motions.
A standard response spectrum curve defined in seismic codes is defined as follows.
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