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DITCH SA-D1A <br />SEDCAD+ CHANNEL UTILITY <br />• <br />ROCK RIPRAP CHANNEL <br />T <br />* Z* <br />* * D <br />* <br />* b <br />Discharge = 1.46 cfs Depth (D) = 0.23 feet <br />Bottom (b) = 1.00 feet Top width (T) = 1.90 feet <br />Side slopes (Z) = 2.0:1 Velocity = 4.37 ft/sec <br />Bed Slope = 11.200 ~ Hydraulic Radius = 0.16 feet <br />Manning's n = 0.034 <br />Specific Gravity = 2.77 Bottom D50 = 0.35 feet <br />Safety Factor = 1.01 Bank D50 = 0.41 feet <br />• <br /> <br />Exhibit 18 <br />Revised 12/8/89 <br />-35- <br />