1. Assistant Professor, Dept. of Technology and Construction Management, Missouri State Univ., 901 S. National Ave., Springfield, MO 65897 (corresponding author).
2. Associate Professor, Dept. of Technology and Construction Management, Missouri State Univ., 901 S. National Ave. Springfield, MO 65897.
3. Lecturer, Civil, Architectural and Environmental Engineering, Missouri Univ. of Science and Technology, 134 Butler-Carlton Hall, 1401 North Pine Street, Rolla, MO 65409.