1. Associate Professor, Dept. of Civil Engineering, Univ. of Puerto Rico, Carretera 108 Km 1.8 Interior, Mayagüez, PR 00681 (corresponding author).
2. Lecturer, Dept. of Civil and Natural Resources Engineering, Univ. of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand.
3. Professor, Dept. of Civil, Construction, and Environmental Engineering, Iowa State Univ., 494 Town Engineering Bldg., Ames, IA 50011-3232.
4. President, Capital Project Strategies LLC, 11710 Plaza America Dr., Suite 2000, Reston, VA 20190.