1. Assistant Professor, Dept. of Civil, Architectural, and Environmental Engineering, Drexel Univ., 3141 Chestnut St., Philadelphia, PA 19104 (corresponding author).
2. Graduate Research Assistant, Dept. of Civil Architectural, and Environmental Engineering, Drexel Univ., Philadelphia, PA 19104.
3. Professor, Dept. of Civil and Environmental Engineering, Brigham Young Univ., 368 CB Provo, UT 84602.