1. Graduate Student, Dept. Construction Management and Engineering, North Dakota State Univ., Fargo, ND 58108.
2. Assistant Professor, Dept. of Construction Management and Engineering, North Dakota State Univ., Fargo, ND 58108 (corresponding author).
3. Associate Professor, Dept. of Construction Management and Engineering, North Dakota State Univ., Fargo, ND 58108.
4. Graduate Student, Dept. of Construction Management and Engineering, North Dakota State Univ., Fargo, ND 58108.