1. Zachry Professor, Design and Construction Integration II, Zachry Dept. of Civil Engineering, 3136 TAMU, Texas A & M Univ., College Station, TX 77843-3136.
2. Assistant Professor, Construction Engineering, Civil, Construction, and Environmental Engineering, Iowa State Univ., 498 Town Engineering Building, Ames, IA 50011 (corresponding author).
3. Eminent Scholar Emeritus, Del E. Webb School of Construction, Arizona State Univ., P.O. Box 6700, Chandler, AZ 85246.