ABSTRACT
Eq. (10.35) is the same as Eq. (10.29) obtained by the conventional method of analysis. Bishop (1955) suggests that the accuracy of the analysis can be improved by taking into
account the forces E and T on the vertical faces of each slice. For the element in Fig. 10.23(b), we may write an expression for all the forces acting in the vertical direction for the equilibrium condition as
N' cosO = W + (Ii - T2 ) - ul cosO-FR sin 0 (10.36) If the slope is not on the verge of failure (F
s > 1), the tangential force Ft is equal to the
shearing resistance FR on ed divided by Fs•
