Fundamentals of Engineering Design
Figure 5.47a Shear Failure Along a Planar Slip Surface Through the Toe of the Slope
Figure 5.47b Shear Failure Along a Planar Slip Surface Through the Toe of the Slope With a
Tension Crack
slope, prone to fail in a planar fashion. Equations (5.39) and (5.40) define the driving force (FD) and
resisting force (FR) components of the factor of safety, respectively.
FD = W sin
(5.39)
F R ' c ) L % N tan M)
(5.40)
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