1. Ph.D. Student, Dept. of Architecture and Architectural Engineering, Seoul National Univ., #39-425, Gwanak-ro 1, Gwanak-gu, Seoul 08826, Korea.
2. Professor, Dept. of Architecture and Architectural Engineering, Seoul National Univ., #39-425, Gwanak-ro 1, Gwanak-gu, Seoul 08826, Korea.
3. Ph.D. Student, Charles Durham School of Architectural Engineering and Construction, Univ. of Nebraska–Lincoln, W145H Nebraska Hall, Lincoln, NE 68588.
4. Professor, Dept. of Architecture and Architectural Engineering, Seoul National Univ., #39-425, Gwanak-ro 1, Gwanak-gu, Seoul 08826, Korea (corresponding author).