Laserfiche WebLink
Structure #27 (Null) <br /> Null Below Culvert 70 <br />Structure #26 (Erodible Channel) <br /> Natural Sorted Ditch at Toe of Temp Spoil Pile <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 1.5:1 12.0 0.0250 6.0 <br /> Erodible Channel Results: <br />w/o Freeboard w/ Freeboard <br />Design Discharge: 44.20 cfs <br />Depth: 1.42 ft <br />Top Width: 4.27 ft <br />Velocity: 14.56 fps <br />X-Section Area: 3.04 sq ft <br />Hydraulic Radius: 0.592 ft <br />Froude Number: 3.04 <br />Structure #5 (Riprap Channel) <br /> D-3 Ditch <br /> Trapezoidal Riprap Channel Inputs: <br />Material: Riprap <br />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 />12.00 2.0:1 2.0:1 16.1 2.98 <br /> Riprap Channel Results: <br />Simons/OSM Method - Mild Slope Design <br />w/o Freeboard w/ Freeboard <br />Design Discharge: 0.02 cfs <br />Depth: 0.02 ft 3.00 ft <br />Top Width: 12.07 ft 23.99 ft <br />Velocity: 0.11 fps <br />X-Section Area: 0.21 sq ft <br />Filename: Exhibit 7 Item 23 Part B 10-Yr 24-Hr Section 25 During Mining.sc4 Printed 03-17-2022 <br />SEDCAD 4 for Windows <br />Copyright 1998 -2010 Pamela J. Schwab <br />Civil Software Design, LLC 27