1. Ph.D. Candidate, Dept. of Civil, Construction, and Environmental Engineering, North Carolina State Univ., Raleigh, NC 27695.
2. Associate Professor, Dept. of Civil, Construction, and Environmental Engineering, Campus Box 7908, North Carolina State Univ., Raleigh, NC 27695 (corresponding author).
3. Professor Emeritus, Dept. of Civil, Construction, and Environmental Engineering, Campus Box 7908, North Carolina State Univ., Raleigh, NC 27695.