1. Lieutenant Colonel of USAF, Dept. of Civil, Construction, and Environmental Engineering, North Carolina State Univ., Raleigh, NC 27695-7908.
2. Professor, Dept. of Civil, Construction, and Environmental Engineering, North Carolina State Univ., Raleigh, NC 27695-7908.
3. Professor, Dept. of Civil, Construction, and Environmental Engineering North Carolina State Univ., Raleigh, NC 27695-7908 (corresponding author).