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• <br />SEDCAD 4 for Windows <br />r.~..,,.:,.n. ~oaa-or~m o~...e~~ i e..n,.~n <br />13 <br />Velocity and Mannin9's n calculations may not apply for this methotl. <br />Structure #Z2 (Null) <br />SEC. 18 NULL 4 <br />Structure #Z3 (Riprao Channel <br />SEC, Z8 DITCH 14 <br />Trapezoidal Riprap Channel Inputs: <br /> w/o Freeboard w/ Freeboard <br />Design Discharge: 236.03 As <br />Depth: 0.71 R 1.71 ft <br />Top Width: 16.24 R 22.24 R <br />Velocity*: <br />X•SeQion Area: 9.98 sq ft <br />Hydraulic Radius: 0.606 ft <br />Froude Number*: <br />Manning's n*: <br />Dmin: 9.00 in <br />DSO: 27.00 in <br />Dmax: 33.75 in <br />Bottom Left Right freeboard Freeboard Freeboard <br />Width (ft) Sideslope <br />R Sideslope Slope (%) <br />Depth (ft) % of Depth Mull. x <br />atio Rado (VxD) <br />12.00 3.0:1 3.0:1 25.0 1.00 <br />Riprap Channel Results: <br />Simons/OSM Method -Steep Slope Design <br /> <br />Vebcity and Manning's n cakulations may not apply for [his method. <br />Structure #S Lgetated Channell <br />Material: Riprap <br />SEC, ZB DITCH 1 <br />Trapezoidal Vegetated Channel Inputs: <br />Material: Smooth brome <br /> <br />Bottom LeR Right Freeboard Freeboard <br />Retardance Freeloard Limiting <br /> <br />Width (R) Sideslope Sideslope Slope (°k) <br />Gasses Depth (ft) °h of Depth Mult. x Velocity <br /> Ratio Ratio (VxD) (fps) <br />12.00 3.0:1 3.0:1 20.0 D, B 1.00 3.0 <br />• <br />Filename: STSec28PMP.070807.srA <br />Exh. 7-20A-89 <br />Printed 01-OB-2007 <br />Revision Date: 1/05/07 <br />Revison No.: PR-02 <br />