1. GAANN Research Fellow, Glenn Dept. of Civil Engineering, Clemson Univ., 139 Lowry Hall, Clemson, SC 29634 (corresponding author).
2. Assistant Professor, Glenn Dept. of Civil Engineering, Clemson Univ., 310A Lowry Hall, Clemson, SC 29634.
3. Associate Professor, Glenn Dept. of Civil Engineering, Clemson Univ., 208 Lowry Hall, Clemson, SC 29634.