1. Graduate Student, Dept. of Civil and Environmental Engineering, Univ. of Tennessee-Knoxville, Knoxville, TN 37902.
2. Interim Chair, Dept. of Civil and Environmental Engineering, UNC Charlotte, Energy Production and Infrastructure Center, Building #72, Room 3250, 9201 Univ. City Blvd., Charlotte, NC 28223 (corresponding author).
3. Associate Professor, Dept. of Civil Engineering, Auburn Univ., Auburn, AL 36849.