1. Assistant Professor, Dept. of Architectural Engineering, King Fahd Univ. of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
2. Associate Professor, Dept. of Civil Engineering, Univ. of British Columbia, Vancouver, BC, Canada V6T 1Z4.
3. Senior Research Officer, Inst. for Research in Construction, National Research Council Canada, Ottawa, ON, Canada K1A 0R6.