1. Research Engineer, Dept. of Civil and Environmental Engineering, Univ. of Alberta, Edmonton, Alberta, Canada T6G 2G7. E-mail: ymohamed@construction.ualberta.ca
2. NSERC/Alberta Constructions Industry Research Chair in Construction Engineering and Management, Dept. of Civil and Environmental Engineering, Univ. of Alberta, Edmonton, Alberta, Canada T6G 2G7 (corresponding author). E-mail: abourizk@ualberta.ca