In the context of the seismic evaluation of building structures, nonlinear static analysis that makes use of pushover
processes is becoming an increasingly common technique in engineering practice. In order to carry out a pushover study, the document FEMA-356 (2000) suggests using a variety of distributions of lateral forces. The use of these force distributions, on the other hand, does not adequately reflect the effects of modifying dynamic parameters across the inelastic response or the influence of higher modes.