The geogrid encased stone column (GESC) system, which increases the confinement effect, has been developed to improve the load carrying capacity of stone columns. This paper investigates improvement in load-carrying capacity and reduction in bulging of a geogrid cncasedstone column using field load tests. Also, to examine the effect of the geogrid encasement depth, GESC were for changing geogrid encasement depths from the upper part of 2D and 3D. It is found from load tests that geogrid encased stone columns have much higher load carrying capacity and less laterial bulging compared to conventional stone columns