1. Assistant Professor, Dept. of Civil, Environmental and Construction Engineering, Univ. of Central Florida, 4000 Central Florida Blvd., Bldg. 91, Suite 211, Orlando, FL 32816 (corresponding author).
2. Assistant Professor, Dept. of Architectural Engineering, Dong-A Univ., 37 Nakdong-Daero 550 beon-gil, Saha-gu, Busan 604-714, Korea.
3. Assistant Professor, Dept. of Civil Engineering, Hongik Univ., Mapo-gu, Sangsu-dong 72-1, Seoul 121-791, South Korea.
4. Assistant Professor, Dept. of Architectural Engineering, Dong-Eui Univ., 176 Eomgwangno, Busanjin-gu, Busan 614-714, South Korea.