1. Environmental Engineering Department, Egypt–Japan University of Science and Technology (E-JUST), Alexandria 21934, Egypt
2. Civil Engineering Department, School of Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
3. Seconded from Faculty of Engineering, Zagazig University, Zagazig 44159, Egypt
4. Universidad Privada Boliviana, La Paz, Pedro Domingo Murillo, Bolivia