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• <br />Riprap - Steep Slope Design - Simons /OSM Method <br />Discharge = 8.34 cfs <br />Side slopes (2) = 3.6:1(L) <br />Bed Slope = 22. 08 f <br />Manning s n = 6.636 <br />DS0 <br />D18 <br />Depth (a) <br />Top width (t) <br />2.6:1(R) Velocity <br />Hydraulic Radius <br />Froude number <br />= 6.94 ft (11.25 in) <br />= 8.75 ft ( 9.68 in) <br />= 6.25 ft ( 3.68 in) <br />w! Freeboart <br />0.87 (D = 1.8 <br />0.37 (T = 5.3 <br />25.12 fps <br />8.83 ft <br />19.98 <br />• <br />u <br />7- 6 -3 -15d Revised 08/20/93 <br />SEDCAD+ CHANNEL DESIGN <br />