Response Modification Factor

The NCh433 code defines values for the response modification factor, R*. This factor is intended to reflect the energy absorption and dissipation characteris­tics of the resisting structure, as well as the practical experience on the seismic behavior of the different types of structures and materials used. The response modification factors are shown in Fig. 12.

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FIG. 12—(R*) Response spectra modification factor [21].