1. Faculty, Dept. of Building and Industrial Construction, National Univ. of Civil Engineering, 55 Giai Phong St., Hanoi, Vietnam.
2. Associate Professor, Dept. of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA 24061 (corresponding author).
3. Senior Advisor, CPM, Corporate Office Park, CPM Plaza, 44 Rd. 20 Suite 201, Guaynabo, PR 00966.