Clifford J. Schexnayder is a Del E. Webb School of Construction, Arizona State University Eminent Scholar Emeritus. He has authored five editions of Construction Planning, Equipment & Methods, two editions of Construction Management Fundamentals, and the latest edition of Moving the Earth, all with McGraw-Hill, Inc. He received his Ph.D. in civil engineering (construction engineering and management) from Purdue University, and a Masters and Bachelors in civil engineering from Georgia Institute of Technology. A construction engineer with over 45 years of practical experience, Cliff has worked with major construction contractors as field engineer, estimator, and corporate chief engineer. Additionally, he served with the U.S. Army Corps of Engineers on active duty and in the reserves, retiring as a colonel. His last assignment was as Executive Director, Directorate of Military Programs, Office of the Chief of Engineers, Washington, D.C. Cliff served as a consultant to the Autoridad del Canal de Panama reviewing the cost estimate for the 3rd Lane project and for the Secretary of the Business, Transportation & Housing Agency of California appraising issues associated with constructing the main east span of the San Francisco-Oakland Bay Bridge. He is a member of the National Academy of Construction and the Academia Panamericana de Ingeniería.