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DITCH 9-D10 <br />SEDCAD+ CHANNEL UTILITY <br />----------------------- <br />• <br />• <br /> <br />ROCK RIPRAP CHANNEL <br />T <br />******************************** <br />* * <br />* <br />* Z* <br />* * <br />* <br />* b <br />Discharge <br />Bottom (b) <br />Side slopes (Z) <br />Bed Slope <br />Manning's n <br />Specific Gravity <br />Safety Factor <br />22.36 cfs <br />8.00 feet <br />3.0:1 <br />6.300 $ <br />0.034 <br />2.77 <br />1.10 <br />D <br />Depth (D) _ <br />Top width (T) _ <br />Velocity = <br />Hydraulic Radius = <br />Bottom D50 = <br />Bank D50 = <br />0.42 feet <br />10.51 feet <br />5.68 ft/sec <br />0.36 feet <br />0.38 feet <br />0.35 feet <br />Exhibit 18 Revised 12/8/89 <br />-237- <br />