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 (E) were determined from oedometric compression curves at various compression levels, and then the experimental equations between deformation modulus and primary void ratio, and between modulus of lateral soil pressure and deformation modulus were concluded at maximum loose and maximum dense.