1. Ph.D. Student, School of Building Construction, Georgia Institute of Technology, 280 Ferst Dr., Atlanta, GA 30332 (corresponding author).
2. Assistant Professor and Chair in Heavy Construction, Dept. of Civil Engineering, McMaster Univ., 1280 Main St. W., JHE-301, Hamilton, Ontario, Canada, L8S 4L7.
3. Professor, Dept. of Civil and Environmental Engineering, 123C Porter Hall, Carnegie Mellon Univ., 5000 Forbes Ave., Pittsburgh, PA 15213.
4. Assistant Professor, Dept. of Civil and Environmental Engineering, 119 Porter Hall, Carnegie Mellon Univ., 5000 Forbes Ave., Pittsburgh, PA 15213.
5. Associate Professor, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Texas at Austin, 1 University Station C1752, Austin, TX 78712.