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Calculate Resistance To Sliding Using Single Wedge Analysis For Wall Without Key:
The design process below comes from the UFC Reference and is used along with the forces derived from the wedge analysis to check resistance to sliding.
 
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)

   
   
   
Output:
 
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Rsl =
 
 
 
 
 



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