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Spillway fond 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 <br />D <br />1.0 <br />Feet <br />Width <br />W <br />3 <br />Feet <br />Slope <br />S <br />0.03 <br />Express as Decimal <br />Mannings "N" <br />N <br />0.013 <br />Express as Decimal <br />Side Slope <br />X <br />0.1 <br />Slope = X:1 <br />AREA=(W*D)+(X*D^2)= <br />WETTED PERIMETER=(W)+2*[((X*D)^2+D^2)^0.5] <br />R=AREANVETTED PERIMETER <br />V=(1.49/N) *(R ^.667)*(S^.5)= <br />Q=AXV= <br />Q REQUIRED - Peak Discharge <br />Flume Outlet Channel <br />Manning's Equation <br />Flow In a Triangular Channel <br />3.10 FEET ^2 <br />5.01 FEET <br />0.62 <br />14.42 FT/SEC <br />44.69 CFS <br />42.89 CFS <br />Depth <br />D <br />0.76 <br />Feet <br />Width <br />W <br />3 <br />Feet <br />Slope <br />S <br />0.5 <br />Express as Decimal <br />Mannings "N" <br />N <br />0.055 <br />Express as Decimal <br />Side Slope <br />X <br />2 <br />Slope = X:1 <br />AREA=(W*D)+(X*D^2)= <br />WETTED PERIMETER=(W)+2*[((X*D)^2+D^2)^0.5] <br />R=AREANVETTED PERIMETER <br />V=(1.49/N)-(R A .667)*(SA.5)= <br />Q=AXV= <br />Q REQUIRED - Peak Discharge <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 />V = Velocity <br />S = Slope <br />3.44 FEET "2 <br />6.40 FEET <br />0.54 <br />12.65 FT/SEC <br />43.47 CFS <br />42.89 CFS <br />D50 = 2.20 feet 26 inches Use 6" to 18" Rock <br />TR -98 App. B-9 04/15 <br />