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Asg - 5 <br />• A. NORTH COLLECTOR DITCH <br />"V" Shaped Ditch with 2:1 sideslopes <br />HYDRAULIC DATA <br />Flow Rate 22.26 cfs <br />Manning Number 0.035 <br />Velocity @ Normal Depth 2.78 fps <br />Slope of Channel 5.25 7. <br />Area of Flow 8.02 sgft <br />Normal Depth of Flow Z.00 ft <br />Total Depth of Channel 2.50 ft <br />IV. CULVERT DESIGN <br />At STN 86+60 of the refuse disposal haul road there is a <br />culvert that allows the water in the North Collector ditch to <br />pass under the road. This culvert must also be sized to pass <br />the flow of a 100 year storm. <br />Q100 = 22.26 cfs <br />Assume a culvert with inlet control and Ke = 0.5 <br />• Then use a 30" diameter culvert so that HW/D = 1.05 <br /> <br />2/16/89 <br />