Need to design a cantilever retaining wall 8m high, saturated unit weight is 16kn/m3, surcharge is 7kn/m2, load above wall supported on wall stem is 10 kn/m run, angle in internal friction is 35 dergre phi, delta in degree is 23.33, cohesion of clay under base is 35kn/m2,soil pressure is 125kn/m2.