Seismic Structural Design/Analysis Guidelines for Buildings.

This report presents interim guidelines for the seismic structural designanalysis of the lateral-force-resisting systems of permanent military buildings. These guidelines are intended to enable critical, high-loss- and low-loss-potential buildings to withstand their respective design earthquakes without unacceptable loss of function or structural damage. Modal analysis procedures are advocated for critical buildings and high-loss-potential buildings with irregular shapes, large differences in lateral resistance, or other unusual structural features. The equivalent static lateral load method is advocated for high-loss- and low-loss-potential buildings which are regular in shape and have uniform mass and stiffness distributions. Both procedures employ a design spectrum for the seismic ground motion which is constructed based on the effective peak ground acceleration at the site. Author