1. Associate Professor, Faculty of Engineering, Dept. of Civil Engineering, Univ. of Malaya, Kuala Lumpur 50603, Malaysia. ORCID: .
2. Ph.D. Student, School of Civil Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal, Penang 14300, Malaysia (corresponding author).
3. Lecturer, Dept. of Dams and Water Resources Engineering, College of Engineering, Univ. of Anbar, Ramadi, Anbar 31001, Iraq. ORCID: .
4. Professor, School of Civil Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal, Penang 14300, Malaysia.