Site response analysis have to be performed in accordance with Section 21.1 for structures on Site Class F sites, unless exempted in accordance with Section 20.3.1.
A site response analysis in accordance with Section 21.1 and/or a ground motion hazard analysis in accordance with Section 21.2 could be performed to determine ground motions for any structure.
Due to the need for site-specific analysis for site class F, the reduced design spectrum needs to be imported as a .txt file.
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