1. Graduate Student of Construction Engineering and Management, Dept. of Civil and Environmental Engineering, Univ. of Wisconsin-Madison, 2256 Engineering Hall, 1415 Engineering Dr., Madison, WI 53706.
2. Professor and Chair Construction Engineering and Management, Dept. of Civil and Environmental Engineering, Univ. of Wisconsin-Madison, 2320 Engineering Hall, 1415 Engineering Dr., Madison, WI 53706.
3. Assistant Professor, John L. Tishman Faculty Scholar, Dept. of Civil and Environmental Engineering, Univ. of Michigan, Ann Arbor, MI 48109; formerly, M. A. Mortenson Company Assistant Professor of Construction Engineering and Management, Dept. of Civil and Environmental Engineering, Univ. of Wisconsin, Madison, WI 53706 (corresponding author).