1. Research Fellow, Salford Centre for Research & Innovation, School of Built Environment, Univ. of Salford, Salford, Greater Manchester M5 4WT, U.K. (corresponding author).
2. Professor and Head, Dept. of Architectural Engineering, The Pennsylvania State Univ., University Park, PA 16802.
3. Professor, Dept. of Civil and Building Engineering, Loughborough Univ., Loughborough, Leicestershire LE11 3TU, U.K.
4. Assistant Professor, Dept. of Civil Engineering, Middle East Technical Univ., 06531 Ankara, Turkey.