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<br />- <br /> <br />---- <br /> <br />N o1tation <br /> <br />--- <br /> <br />- <br /> <br />---- <br /> <br />v = Velocity <br />g = Ace eleration due to Gravity <br /> <br />A = Cross-Sectional Area <br /> <br />P = Wetted Perimeter <br /> <br /> <br />R = Hydraulic Radius <br /> <br /> <br />S = Slope <br /> <br /> <br />s = Shear Strength <br /> <br /> <br />c = Cohesion of the Material <br /> <br /> <br />a = Normal Stress <br /> <br /> <br />cI> = Angle of Repose <br /> <br />a' = Effective Stress <br /> <br />u = Porf' Water Pressure <br /> <br />Cu = Undrained Strength <br />c' = Effective Cohesion <br /> <br />Coloral~o Erosion Control Manual <br /> <br />---- <br /> <br />XI <br />