2008-12-04_PERMIT FILE - C1994082 ‎(22)‎

• 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 13-20.1 Appendix 13-20.1-C
• Media Type: D
• Archive: No

SEDCAD 4.0
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Material: Riprap
Trapezoidal Channel
Left Right
Bottom Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
Width (ft) Ratio Ratio Mult. x
Depth (ft) °/a of Depth
(~D)
12.00 3.0:1 3.0:1 33.0 I 0.30
PADER Method -Steep Slope Design
•
SEDCAD Utility Run
TR-37
w/o Freeboard w/ Freeboard
Design Discharge: 4.60 cfs
Depth: 0.11 ft 0.41 ft
Top Width: 12.65 ft 14.45 ft
Velocity: 3.46 fps
X-Section Area: 1.33 sq ft
Hydraulic Radius: 0.105
Froude Number: 1.88
Manning's n: 0.0550
Dmin: 1.00 in
D50: 1.50 in
Dmax: 3.00 in
Printed 02-19-2008
13-20.1-C.2 Revised 02/08