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SEDCAD 4 for Windows <br />c,...,,.~..~.~ m°a o~,.,vi~ i c~n,.,~n <br />7 <br />Simons/OSM Method -Steep Slope Design <br /> w/o Freeboard w/ Freeboard <br />Design Discharge: 1.73 cfs <br />Depth: 0.04 ft 2.54 R <br />Top Wid[h: 3.12 ft 10.62 ft <br />velocity*: <br />X-Section Area: 0.12 sq ft <br />Hydraulic Radius: 0.039 <br />Froude Number*: <br />Manning's n*: <br />Dmin: 4.00 in <br />D50: 12.00 in <br />Dmax: 15.00 in <br />Velocity and Manning's n calculations may not apply for this method. <br />Structure #8 (Erodib/e Channel) <br />I <br />Trapezoidal Erodible Channel Inputs: <br />Material: Alluvial silts colloidal <br />Bottom Left Right Freeboard Freeboard Freeboard Limiting <br />() Sideslope Sideslope slope (%) Manning's n <br />Width R ~ Mult. x Velocity <br />Ratio Ratio Depth (ft) % of Depth (VxD) (fps) <br />3.00 1.5:1 1.5:1 4.0 0.0250 2.50 5.0 <br />Erodible Channel Results: <br /> w/o Freeboard w/ Freeboard <br />Design Discharge: 2.07 tfs <br />Depth: ~ 0.18 R 2.68 ft <br />Top Width: 3.54 R 11.04 R <br />Velocity: 3.53 fps <br />X-Section Area: 0.59 sq ft <br />Hydraulic Radius: 0.161 <br />Froude Number: 1.53 <br />Structure #2 Ri rap Channe/1 <br />A <br />• Trapezoidal Riprap Channel Inputs: <br />Material: Riprap <br />Filename: MunGob-100.sc4 <br />M" <br />M(vii)-28 <br />Printed 0648-2002 <br />6/02 <br />