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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.How does ideCAD define horizontal elastic design spectrum for site-pecific ground motion, according to ASCE 7-16?

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  • 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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  • user defines short-period and long-period site coefficients Fa and Fv.

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Site response analysis has to be performed in accordance with 11.4.8.

When short-period site coefficient Fa and long-period site coefficient for a period of 1.0 seconds are defined, horizontal elastic design acceleration spectrum corner periods To and Ts are calculated, and the horizontal elastic design spectrum is created.

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