1. Senior Lecturer, Faculty of Civil and Environmental Engineering, Univ. Tun Hussein Onn Malaysia, Malaysia (corresponding author).
2. Associate Professor, Dept. of Architecture, Design and Urban Planning, Univ. of Sassari, Italy.
3. Environmental Engineer, ADA Studio, Tolmezzo, Italy; formerly, Graduate Student, Dept. of Civil and Environmental Engineering, Univ. of Trieste, Italy.
4. Senior Lecturer, Faculty of Civil and Environmental Engineering, Univ. Tun Hussein Onn Malaysia, Malaysia.