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Structure Detail: <br />Structure #9 (Erodible Channel) <br /> Collom Haul Road North Ditch to Culvert 35 <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 />1.5:1 7.0:1 6.4 0.0250 6.0 <br /> Erodible Channel Results: <br />w/o Freeboard w/ Freeboard <br />Design Discharge: 0.22 cfs <br />Depth: 0.14 ft <br />Top Width: 1.21 ft <br />Velocity: 2.55 fps <br />X-Section Area: 0.09 sq ft <br />Hydraulic Radius: 0.070 ft <br />Froude Number: 1.68 <br />Structure #5 (Culvert) <br /> Culvert 35 <br /> Culvert Inputs: <br />Length (ft) Slope (%) Manning's n <br />Max. <br />Headwater <br />(ft) <br />Tailwater <br />(ft) <br />Entrance <br />Loss Coef. <br />(Ke) <br />273.00 13.00 0.0150 1.00 0.00 0.90 <br /> Culvert Results: <br />Design Discharge = 0.22 cfs <br />Minimum pipe diameter: 1 - 4 inch pipe(s) required <br />Structure #3 (Riprap Channel) <br /> C-4 Channel <br /> Trapezoidal Riprap Channel Inputs: <br />Material: Riprap <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 5