2008-12-04_PERMIT FILE - C1994082 ‎(12)‎

• Permit No: C1994082
• IBM Index Class Name: Permit File
• Doc Date: 12/4/2008
• Doc Name: Emergency Spillway Outflow Channel Requirements for Postmine Conditions
• Section_Exhibit Name: Tab 13 Attachment 13-17.1 Appendix 13-17.1-C
• Media Type: D
• Archive: No

SEDCAD 4.0
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Material: Ripra>,
Trapezoidal Channel
Left Right Freeboard Freeboard Freeboard
Width°(ft) Sideslope Sideslope Slope (%) Depth (ft) % of Depth Mult. x
Ratio Ratio (VxD)
20.00 3.0:1 3.0:1 25.0 0.30
PADER Method -Steep Slope Design

•
P~~d 0~.4v E~~~~~~a~~w Sp~1~1n~a~r Ot.ltslo~~ ° 25°ro S~ap~e

w/o Freeboard w/ Freeboard
Design Discharge: 8.72 cfs
Depth: 0.12 ft 0.42 ft
Top Width: 20.74 ft 22.54 ft
Velocity: 3.49 fps
X-Section Area: 2.50 sq ft
Hydraulic Radius: 0.120
Froude Number: 1.77
Manning's n: 0.0520
Dmin: 1.00 in
D50: 1.50 in
Dmax: 3.00 in
SEDCAD Utility Run
TR-37
Printed 02-05-2008
13-17.1-C.1 Revised 02/08