JAMES F. WILSON, PHD, is Professor Emeritus in the Department of Civil and Environmental Engineering at Duke University. He has earned numerous awards and authored several hundred papers, along with five previous books. BRUCE J. MUGA, PHD, is Professor Emeritus in the Department of Civil and Environmental Engineering at Duke University. During his career, he worked with the U.S. Naval Civil Engineering Laboratory in Port Hueneme, California. LYMON C. REESE, PHD, is the Nasser I. Al-Rashid Chair Emeritus and Professor of Civil Engineering at the University of Texas in Austin. He is also principal at Ensoft, Inc., a distributor of engineering software, and a consultant with Lymon C. Reese & Associates, a subsidiary of Ensoft.