1. Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of Alabama in Huntsville, AL 35899 (corresponding author).
2. Associate Professor, Dept. of Civil, Construction, and Environmental Engineering, Univ. of Alabama at Birmingham, Birmingham, AL 35294; formerly, Associate Research Professor, School of Sustainable Engineering and the Built Environment, Arizona State Univ., Tempe, AZ 85287-0204.