1. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Alberta, Edmonton, AB Canada T6G 2W2 (corresponding author).
2. Visiting Research Scientist, ATLSS Center; formerly, Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Lehigh Univ., Bethlehem, PA 18015.
3. Joseph T. Stuart Professor of Structural Engineering and Director, ATLSS Center, Dept. of Civil and Environmental Engineering, Lehigh Univ., Bethlehem, PA 18015.