1. Asst. Prof., Cairo Univ., Public Works Dept., Egypt. E-mail: yhassan@ ccs.carleton.ca
2. Assoc. Prof., Dept. of Civ. Engrg., Univ. of British Columbia, Vancouver, BC, Canada V6T 1Z4. E-mail: tsayed@civil.ubc.ca
3. Res. Asst., Dept. of Civ. Engrg., Univ. of British Columbia, Vancouver, BC, Canada V6T 1Z4. E-mail: vtabernero@ndlea.com