1. Assistant Professor, Civil and Environmental Engineering, Colorado State Univ., Fort Collins, CO 80523 (corresponding author).
2. Distinguished University Professor and Head, Civil, Construction, and Environmental Engineering, North Carolina State Univ., Raleigh, NC, 27695.
3. Professor of Practice, Civil, and Environmental Engineering, Univ. of Wisconsin-Madison, Madison, WI 53706.
4. Dean, School of Engineering and Applied Science, Univ. of Virginia, Charlottesville, VA 22904.