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Bottom <br />Width (ft) <br />Left <br />Sideslope <br />Ratio <br />Right <br />Sideslope <br />Ratio <br />Slope (%)Freeboard <br />Depth (ft) <br />Freeboard <br />% of Depth <br />Freeboard <br />Mult. x <br />(VxD) <br />5.00 2.0:1 2.0:1 5.0 2.90 <br /> Riprap Channel Results: <br />Simons/OSM Method - Mild Slope Design <br />w/o Freeboard w/ Freeboard <br />Design Discharge: 0.58 cfs <br />Depth: 0.10 ft 3.00 ft <br />Top Width: 5.42 ft 17.02 ft <br />Velocity: 1.07 fps <br />X-Section Area: 0.55 sq ft <br />Hydraulic Radius: 0.100 ft <br />Froude Number: 0.59 <br />Manning's n: 0.0288 <br />Dmin: 0.00 in <br />D50: 3.00 in <br />Dmax: 0.00 in <br />Structure #8 (Erodible Channel) <br /> Collom Haul Road South Ditch <br /> Triangular Erodible Channel Inputs: <br />Material: Shales and hardpans <br />Left <br />Sideslope <br />Ratio <br />Right <br />Sideslope <br />Ratio <br />Slope (%) Manning's n <br />Freeboard <br />Depth (ft) <br />Freeboard <br />% of Depth <br />Freeboard <br />Mult. x <br />(VxD) <br />Limiting <br />Velocity <br />(fps) <br />7.0:1 1.5:1 8.3 0.0250 6.0 <br /> Erodible Channel Results: <br />w/o Freeboard w/ Freeboard <br />Design Discharge: 2.99 cfs <br />Depth: 0.36 ft <br />Top Width: 3.07 ft <br />Velocity: 5.39 fps <br />X-Section Area: 0.55 sq ft <br />Hydraulic Radius: 0.176 ft <br />Froude Number: 2.23 <br />Structure #7 (Culvert) <br />Filename: C-3 C-4 Channels 10-yr 24-hr.sc4 Printed 06-16-2021 <br />SEDCAD 4 for Windows <br />Copyright 1998 -2010 Pamela J. Schwab <br />Civil Software Design, LLC 6