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Structure Detail: <br />Structure #2 (Erodible Channel) <br /> North Ditch Collom Haul Road <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 />2.0:1 7.0:1 2.9 0.0250 6.0 <br /> Erodible Channel Results: <br />w/o Freeboard w/ Freeboard <br />Design Discharge: 26.95 cfs <br />Depth: 0.98 ft <br />Top Width: 8.84 ft <br />Velocity: 6.21 fps <br />X-Section Area: 4.34 sq ft <br />Hydraulic Radius: 0.479 ft <br />Froude Number: 1.56 <br />Structure #1 (Culvert) <br /> Culvert 16 <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 />125.00 2.00 0.0240 6.00 0.00 0.90 <br /> Culvert Results: <br />Design Discharge = 26.95 cfs <br />Minimum pipe diameter: 1 - 30 inch pipe(s) required <br />Filename: Exhibit 24 Item 1 36 Inch Culvert Design.sc4 Printed 06-15-2021 <br />SEDCAD 4 for Windows <br />Copyright 1998 -2010 Pamela J. Schwab <br />Civil Software Design, LLC 5