1. Senior Engineer, Thornton Tomasetti, 1617 JFK Boulevard, Ste. 545, Philadelphia, PA 19103 (corresponding author). E-mail: lic6@lehigh.edu
2. Assistant Professor, Dept. of Civil and Environmental Engineering, Lehigh Univ., ATLSS Center, 117 Atlss Dr., Bethlehem, PA 18015. E-mail: cjn3@lehigh.edu