2023-04-19_PERMIT FILE - C1981010 ‎(112)‎

• Permit No: C1981010
• IBM Index Class Name: Permit File
• Doc Date: 4/19/2023
• Doc Name: N-Pit Diversion 25-year, 24-Hour Event AMC II
• Section_Exhibit Name: Appendix Q Section XVII
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
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7
w/o Freeboard w/ Freeboard
Top Width: 29.00 ft 33.00 ft
Velocity: 5.47 fps
X-Section Area: 7.15 sq ft
Hydraulic Radius: 0.245 ft
Froude Number: 1.94
Structure #5(Riprap Channel
Segment 5- new diversion
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right Freeboard Freeboard Freeboard
Bottom a Sideslo Sideslo a Slope Width (ft) p p ( } Depth (ft) of Depth Mult, x
Ratio Ratio
(VXD)
20.00 2.0:1 2.0:1 2.0 1.00
Riprap Channel Results:
Simons/QSM Method - Steep Slope Design
w/o Freeboard w/Freeboard
Design Discharge: 74.95 cfs
Depth: 0.61 ft 1.61 ft
Top Width: 22.44 ft 26.44 ft
Velocity*:
X-Section Area: 12.94 sq ft
Hydraulic Radius: 0.569 ft
Froude Number*:
Manning's n*:
Dmin: 2.00 in
D50: 6.00 in
Dmax: 7.50 in
Velocity and Manning's n calculations may not apply for this method.
Filename: N-Pit Diversion Project-added another segment to refine riprap requirements-25.24-OSM.Simons.504 Printed 09-17-2020