Abstract: A series of tests for determining volumetric deformation of dry sand under horizontal cyclic loadings on shaking table were carried out.The basic characteristics for variation of the volumetric deformations of dry sand with the input acceleration for different duration of vibratory motion and the corresponding limits are preseuted.The relationship between the volumetric deformations of sand for different number of cycles of vibratory motion and input accelerations and its dependence on input frequency are investigated. It is showa by the comparison between test data for different duration and different number of cycles of vibratory motion that the duration of vibratory motion can be used to represent the comprehensive effects of both number of eyeles and frequency on volumetric deformation of dry sand. Besides, the comparison of test results with those obtained by other authors and those calculated is also discussed.