1. a Department of Civil Engineering, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates
2. b Research and Studies Center, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates; Tel: +971-6-5050959, Fax: +971-6-5585173, E-mail: shanableh@sharjah.ac.ae
3. c Department of Civil Engineering, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates; Tel: +971-6-5050959, Fax: +971-6-5585173, E-mail: momar@sharjah.ac.ae