



Calculate Resistance To Sliding By Wedge Method For Keyed
Wall: 

Calculation: 

Designer/Checker: 



Input: 




(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) 











Output: 

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N' = 

Rsl = 

Sliding Force, T' = 








