1. Member, ASCE
2. Asst. Prof., Public Works Dept., Cairo Univ., Giza, Egypt; currently, Visiting Prof., Dept. of Civ. and Envir. Engrg., Carleton Univ., Ottawa, ON, Canada K1S 5B6. E-mail: yhassan@ccs.carleton.ca
3. Prof., Dept. of Civ. Engrg., Lakehead Univ., Thunder Bay, ON, Canada P7B 5E1. E-mail: seasa@gale.lakeheadu.ca