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TABLE 3.9 - 5 Culvert Removal and Stream Channel Reconstruction <br />MUNGER ROAD 18 INCH CULVERT <br />Design the channel to pass the flow from a lOYR 24HR event <br />The calculations of flow for Q10 shown on Page 4 . <br />L~ <br />Given: Event - 10 year 24 hour Q10 = 0.7 cfs <br />Slope of ditch = 6.67 <br />Soil type = Alluvial Silt Noncolloidal <br />Maximum Velocit~r (fps) = 5 <br />Ditch Dimensions: Shape = Trapezoidal <br />Depth = d = 0.12 feet <br />Base = b = 3feet <br />Side Slopes = z = 5.00 <br />Manning No. = n = 0.035 <br />Area of flow = A = bd +zd2 = <br />0.36 <br />Hyd. Radius = R = bd +zd2 / b + 2d(z2 + 1 ~.5 <br />R = 0.0852 <br />Velocity of flow = V = 1.49/n ~ R0.667 ~ S0.5 <br />V = 2.13 <br />Quanfity of Flow = Q = A ~ V <br />Q = 0.767 <br />I~ <br />depth =0.12' <br />z=5h:1V <br />OVERALL CHANNEL DEPTH WILL BE 2 FEET TO CREATE FORD <br />MU VOL 1 PAGE - 3 11 -30 - 96 <br />