This search include making laboratory tests on sandy soil samples ,wich were taken from Damascus Suburb (Alkastal-Maarona- Alsallema) and from Hama(Alsalameya), physical and clasificated tests were made besides oedometer tests, two limited cases were studied :maximum loose and maximum dense for each soil. Values of deformation modulus (Eoed) were determined from oedometric compression curves at various compression levels, and particle shape parameters (sphericity-roundness-elongation) were founded for each soil then the experimental equations between last parameters and deformation modulus were concluded.