1. Dept. of Civil and Environmental Engineering, Univ. of Michigan, 2350 Hayward St., Ann Arbor, United States
2. Dept. of Architectural Engineering, Ajou University, 206, World cup-ro, Suwon-si, Gyeonggi-do, South Korea
3. Dept. of Construction Science, Texas A&M Univ., 3137 TAMU, College Station, United States