Pacific Engineering & Analysis

Pacific Engineering and Analysis is a small business specializing in characterizing strong ground motion for engineering design. We have over twenty years of experience in developing design ground motions for a variety of structures and applications worldwide. We are also extensively involved in research directed at reducing the uncertainty in ground motion prediction and incorporating research results into practice.

We have developed and extensively validated methodologies to simulate strong ground motions and liquefaction susceptibility indicators in any tectonic environment that incorporates extended source effects, regional attenuation, and the effects of site specific soil columns, as well as uncertainties of these parameters.

These methodologies have been used to develop design motions for over thirty critical facilities as well as numerous bridges, dams, and other structures in the western, central, eastern, and southeastern United States as well as worldwide.We have developed empirical attenuation relations for tectonically active regions and subduction zone sources as well as simulation based generic and site-specific attenuation relations for the central, eastern, and southeastern United States, as well as other countries.