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