1. Engineer-In-Training, AECOM, 50 Sportsworld Crossing, Unit 290, Kitchener, Ontario, Canada N2P 0A4; formerly, Student, Univ. of Waterloo, Ontario, Canada (corresponding author).
2. Professor, Dept. of Civil and Environmental Engineering, Univ. of Waterloo, 200 University Ave. West, Waterloo, Ontario, Canada N2L 3G1.
3. Associate Professor, Dept. of Civil Engineering, Univ. of Kentucky, 151C Raymond Building, Lexington, KY 40506-0281.
4. Associate Professor, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Texas at Austin, 1 University Station, Austin, TX.