1. Associate Professor, Dept. of Civil and Environmental Engineering, Pusan National Univ., Busan, 609735, Korea.
2. Former Graduate Student, Dept. of Civil and Environmental Engineering, Pusan National Univ., Busan, 609735, Korea.
3. Lecturer in Construction Management, Dept. of Civil and Environmental Engineering, Pusan National Univ., Busan, 609735, Korea (corresponding author).