1. a School of Civil Engineering, College of Engineering, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia
2. b Department of Civil Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, 43000 Kajang, Selangor, Malaysia
3. c Department of Civil Engineering, Faculty of Engineering, Technology and Built Environment, UCSI University, Kuala Lumpur, 56000, Malaysia
4. d School of Engineering and Technology, Department of Engineering, Sunway University, 47500, Bandar Sunway, Petaling Jaya, Malaysia
5. e Department of Environmental Science and Technology, University of Maryland, College Park, MD 20742, USA