1. Assistant Professor, Dept. of Construction, School of Engineering, Southern Illinois Univ. at Edwardsville, Edwardsville, IL 62025.
2. Master Student, School of Civil Engineering, Purdue Univ., 550 Stadium Mall Drive, West Lafayette, IN 47907.
3. Assistant Professor, School of Civil Engineering, Division of Construction Engineering and Management, Purdue Univ., 550 Stadium Mall Drive, West Lafayette, IN 47907 (corresponding author).
4. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Michigan, 2350 Hayward Street, Ann Arbor, MI 48109.