1. Ph.D. Candidate, School of Civil, Environmental and Architectural Engineering, Korea Univ., Anam-Dong, Seongbuk-Gu, Seoul 136-713, Republic of Korea.
2. Ph.D. Student, School of Civil, Environmental and Architectural Engineering, Korea Univ., Anam-Dong, Seongbuk-Gu, Seoul 136-713, Republic of Korea.
3. Assistant Professor, Dept. of Architectural Engineering, Catholic Kwandong Univ., 24, Beomil-ro 579 beon-gil, Gangneung-Si, Gangwon-Do 210-701, Republic of Korea.
4. Professor, School of Civil, Environmental and Architectural Engineering, Korea Univ., Anam-Dong, Seongbuk-Gu, Seoul 136-713, Republic of Korea (corresponding author).
5. Professor, School of Civil, Environmental and Architectural Engineering, Korea Univ., Anam-Dong, Seongbuk-Gu, Seoul 136-713, Republic of Korea.