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Calculate Surface Uniform Load Surcharge Horizontal Resultant and Moment:
(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)
Active earth pressure coefficient (ka)
Uniform load applied at surface behind wall (q - psf or Nsm)
Height of retaining wall (H - ft or m)
Width of the uniform load (m - ft or m)

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Uniform load surcharge resultant, Rq =
Moment, Mq =

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