الفهرس 
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Abstract
fIRST , i have to express my deepest appreciation tomy professor, Dr. Mohamed ibrahim Balah, professor of civil engineering , suez canal university, for his kind supervision, guidance, advice and encouragement which have turly helped me in bringing this work to suceesful end.
I should like also to express my gratitude to Dr. Tarek helmy omran, lecture of coastal engineering, fayoum faculty of engineering , cairo university for his useful suggestions and guidance throught the study special thanks to the staff of the suez canal authority research center, for thier help in carrying laboratory experimental work.