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Calculate Resistance To Sliding By Wedge Method For Keyed Wall:
(Note: All input Metric units are converted to English units for the equations below and then the output English units are converted back to Metric)
Cohesion of the soil, (c - psf or kPa)
Angle of internal friction of the soil, (AIF - degrees)
Sum of the Vertical resultants, including weight of wall (Rv - lb/ft or N/m)
Sum of the horizontal resultants on the wall (Rh - lb/ft or N/m)
Width of retaining wall base (B - ft or m)
Required factor of safety against sliding, (FS)
Slip plane angle of wedge under key, (SPAng - degrees)

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N' =
Rsl =
Sliding Force, T' =

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