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Seismic analysis procedure is performed with reduced response spectra. At MCER level of ground motion, structural elements are prospective to yield, buckle or behave inelastically. In ASCE 7-16, the response modification coefficient, R is used to compute seismic design interal internal forces by dividing the forces. It is produced in a structure behaving elastically when subjected to the design earthquake ground motion.
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Structures typically have a much higher lateral strength than that specified as the minimum by ASCE 7-16. The first yielding of structures may occur at lateral load levels that are 30% to 100% higher than the prescribed design seismic forces by the standartstandard.