1. Research Assistant, Dept. of Civil Engineering, Middle East Technical Univ., 06531, Ankara, Turkey (corresponding author).
2. Associate Professor, Dept. of Civil Engineering, Middle East Technical Univ., 06531, Ankara, Turkey.
3. Assistant Professor, Dept. of Architecture, Middle East Technical Univ., 06531, Ankara, Turkey.
4. Professor, Dept. of Civil Engineering, Middle East Technical Univ., 06531, Ankara, Turkey.