1. P. C. Rossin Assistant Professor, Dept. of Civil and Environmental Engineering, Lehigh Univ., Bethlehem, PA 18015 (corresponding author).
2. Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Lehigh Univ., Bethlehem, PA 18015.
3. Associate Professor, Dept. of Civil and Environmental Engineering, Lafayette College, Easton, PA 18042.