1. Master Student, Dept. of Civil Engineering, Kuwait Univ., P.O. Box 5969, Safat 13060, Kuwait (corresponding author).
2. Professor, Dept. of Civil Engineering, Kuwait Univ., P.O. Box 5969, Safat 13060, Kuwait.
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of Sharjah, P.O. Box 27272, Sharjah, UAE.