1. Graduate Research Assistant, Dept. of Construction Engineering, National Taiwan Univ. of Science and Technology, 43, Keelung Rd., Sec. 4, Taipei 106, Taiwan; and Lecturer, Dept. of Civil Engineering, Can Tho Univ. Campus II, 3/2 St., Ninh Kieu District, Can Tho City, Vietnam (corresponding author).
2. M.Sc. Candidate, Dept. of Construction Engineering, National Taiwan Univ. of Science and Technology, 43, Keelung Rd., Sec. 4, Taipei 106, Taiwan.
3. Associate Professor, Dept. of Architecture, Hwa-sha Institute of Technology, 1, Gongjhuan Rd., Zhonghe District, New Taipei City 235, Taiwan, R.O.C.
4. Professor and Chairman, Dept. of Construction Engineering, National Taiwan Univ. of Science and Technology, 43, Keelung Rd., Sec. 4, Taipei 106, Taiwan.
5. Professor and Chairman, Dept. of Environmental Engineering, National Ilan Univ., Sec. 1, ShenNong Rd., Ilan 260, Taiwan.
6. Dept. of Construction Engineering, National Taiwan Univ. of Science and Technology, 43, Keelung Rd., Sec. 4, Taipei 106, Taiwan.