When studying the stability of a slope, first issue that needs to be clarified is slip surface, which determines minimum safety factor. The slopes investigated here are homogenous with three distinct gradients (1:1.5; 1:1; 2:1), two defined heights (H-3 m; H-8 m), and four different soil characteristics (S1—clayey silt, S2—sandy clayey S3—sandy silty clay, S4—clay). purpose this paper develop n...