1. Graduate Student, Dept. of Civil Engineering, Auburn Univ., 238 Harbert Engineering Center, Auburn, AL 36849.
2. Ph.D. Candidate, Dept. of Civil Engineering, Auburn Univ., 238 Harbert Engineering Center, Auburn, AL 36849.
3. Assistant Professor, Dept. of Civil Engineering, Auburn Univ., 238 Harbert Engineering Center, Auburn, AL 36849 (corresponding author).