One of the most common ways to stabilize the slope is to use the row of drilled shaft. The goal of this investigation is to introduce applicable methodology to calculate the factors of safety and force, on the shaft, in the static condition. By using the limit equilibrium approach accompanied with the concept of arching, due to incorporating the drilled shaft, the safety and force can be calculated. The 3-dimensional finite element parametric study is used to derive the regression based semi-empirical equations for quantifying the arching effect, through the load transfer factor. A computer program is written to incorporate the algorithms mentioned above for applications to real cases. The results of the proposed methodology are validated by the three dimension finite element analysis.