1. Graduate Student, Dept. of Civil, Construction and Environmental Engineering, North Carolina State Univ., Raleigh, NC 27695-7908 (corresponding author).
2. Graduate Student, Dept. of Civil, Construction and Environmental Engineering, North Carolina State Univ., Raleigh, NC 27695-7908.
3. Associate Professor, Dept. of Civil, Construction and Environmental Engineering, North Carolina State Univ., Raleigh, NC 27695-7908.
4. Professor, Dept. of Civil, Construction and Environmental Engineering, North Carolina State Univ., Raleigh, NC 27695-7908.