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Spillway Pond F <br />Determine flow characteristics in steel flume across Fire Mountain Canal <br />Pond F Steel Flume <br />Manning's Equation <br />Flow In a Rectagular Channel <br />Depth D 1.16 <br />Feet <br />Feet <br />Width W 3 <br />Feet <br />Feet <br />Slope S 0.03 <br />Express as Decimal <br />Express as Decimal <br />Mannings "N" N 0.013 <br />Express as Decimal <br />Express as Decimal <br />Side Slope X 0.1 <br />Slope = X:1 <br />Slope = X:1 <br />AREA= (W *D) +(X *D "2)= <br />3.61 <br />FEET ^2 <br />WETTED PERIMETER= (W) +2 *[((X *D) "2 +D "2) "0.5] 5.33 <br />FEET <br />R= AREANVETTED PERIMETER <br />0.68 <br />0.61 <br />V= (1.49 /N) *(R ^.667) *(S ^.5) = <br />15.32 <br />FT /SEC <br />Q =AXV= <br />55.38 <br />CFS <br />Q REQUIRED - Peak Discharge <br />54.47 <br />CFS <br />Flume Outlet Channel <br />Manning's Equation <br />Flow In a Triangular Channel <br />Depth D <br />0.9 <br />Feet <br />Width W <br />3 <br />Feet <br />Slope S <br />0.5 <br />Express as Decimal <br />Mannings "N" N 0.055 <br />Express as Decimal <br />Side Slope X <br />2 <br />Slope = X:1 <br />AREA= (W *D) +(X *D ^2)= <br />4.32 FEET ^2 <br />WETTED PERIMETER= (W) +2 *[((X <br />*D) ^2 +D ^2) "0.5] 7.02 FEET <br />R= AREA/WETTED PERIMETER <br />0.61 <br />V= (1.49 /N) *(R ^.667) *(S ^.5) = 13.85 FT /SEC <br />Q =AXV= 59.84 CFS <br />Q REQUIRED- Peak Discharge 54.47 CFS <br />Riprap Sizing - Flume Outlet Channel <br />D50 = Size of Riprap <br />D50 = ((V X S ^.17)/7.58)) "2 <br />D50 = Diameter in feet <br />TR -72 App. B -7 05/12 <br />