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• <br />SEDCAD 4 for Windows <br />27 <br /> Stability Stability <br />Class D w/o Class D w/ <br />Freeboard Freeboard Capacity Capacity <br />Class B w/o Class B w/ <br />Freeboard Freeboard <br />Velocity: 0.94 fps 0.43 fps <br />X-Section Area: 7.65 sq k 16.71 sq ft <br />Hydraulic Radius: 0.524 R 0.971 k <br />Froude Number: 0.23 0.08 <br />Roughness Coefficient: 0.0723 0.2387 <br />Structure #S (legetated Channel) <br />SEC. ZI DITCH 4 <br />Trapezoidal Vegetated Channel Inputs: <br />Material: Smooth brome <br />• <br /> <br />Bottom Left Right <br />Retardance Freeboard <br />Freeboard Freeboard Limitin <br />9 <br />° <br />Width (ft) Sideslope Sideslope Slope (/°) Classes <br />R <br />ti <br />i peps (R) °k of Depth Mult. x Velocity <br />(fP ) <br />a <br />o <br />Rat <br />o (VxD) <br />12.00 2.0:1 2.0:1 14.3 D, B 1.00 3.0 <br />Vegetated Channel Results: <br /> Stability <br />Class D w/o <br />Freeboard Stability <br />Class D w/ <br />Freeboard Capacity <br />Class B w/o <br />Freeboard Capacity <br />Class 8 w/ <br />Freeboard <br />Design Discharge: 1.05 cfs 1.05 cfs <br />Depth: 0.09 ft 1.09 ft 0.23 ft 1.23 ft <br />Top Width: 12.38 ft 16.38 ft 12.93 ft 16.93 ft <br />Velocity: 0.92 fps 0.36 fps <br />X-Section Area: 1.15 sq ft 2.90 sq ft <br />Hydraulic Radius: 0.092 ft 0.223 ft <br />Froude Number: 0.53 0.14 <br />Roughness Coefficient: 0.1238 0.5678 <br />Structure #6 (Pond) <br />SEC. ZI SED TRAP 2 <br />Pond Inputs: <br />Initial Pool Dev: 7,921.20 ft <br />Initial Pool: 0.01 ac-ft <br />*Sediment Storage: 0.51 ac-ft <br />Dead Space: 20.00 <br />• <br />Filename: STSec21 Ten24.030807.sc4 <br />Exh. 7-20B-31 <br />Printed 03-09-2007 <br />Revision Date: 3/12!07 <br />Revision No.: PR-02 <br />