We typically recommend a seismic analysis for a project when (for example) we think there is a potential for liquefaction of the subsurface material, or we need to determine the peak surface accelerations and spectral response accelerations. We use EduPro Civil System’s, ProShake and Geostudio’s Quake/W software programs to evaluate the grounds response to earthquakes by generating a representative soil profile and applying representative earthquake motions to the underlying bedrock.