1. Assistant Professor, Dept. of Civil Engineering, NED Univ. of Engineering and Technology, Karachi 75270, Pakistan (corresponding author).
2. Professor, Dept. of Civil Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Tronoh 31750, Malaysia.
3. Assistant Professor, Dept. of Urban and Infrastructure Engineering, NED Univ. of Engineering and Technology, Karachi 75270, Pakistan.