1. Associate Professor, Dept. of Civil Engineering, Ryerson Univ., Toronto, ON, Canada M5B 2K3 (corresponding author).
2. Sales Engineer, Thomas and Betts Limited, 2000 Argentia Rd., Mississauga, ON, Canada L5N 2R7; formerly, Project Engineer, Thurber Engineering Ltd., Toronto, ON, Canada.
3. Professor, Dept. of Civil Engineering, Ryerson Univ., Toronto, ON, Canada M5B 2K3.