1. Graduate Student, Dept. of Civil and Environmental Engineering, American Univ. of Beirut, P.O. Box 11-0236, Riad ElSolh, Beirut 1107-2020, Lebanon.
2. Associate Professor, Dept. of Civil and Environmental Engineering, American Univ. of Beirut, P.O. Box 11-0236, Riad ElSolh, Beirut 1107-2020, Lebanon.
3. Professor, Dept. of Civil and Environmental Engineering, American Univ. of Beirut, P.O. Box 11-0236, Riad ElSolh, Beirut 1107-2020, Lebanon.