This half-day seminar was presented by Dr. S. K. Ghosh in Southern California in May 2009. The seminar presents the requirements for seismic design using structural dynamics, with emphasis on the response spectrum analysis method. Theoretical background information on response spectrum analysis as well as a clear, step-by-step procedure for designs based on such analysis is presented. Engineers, code enforcement officials, building designers, faculty, and advanced students seeking an understanding of seismic design based on dynamic analysis would benefit immensely from this seminar. The seminar is based on ASCE 7-05 and the 2006 and 2009 IBCs.