2008-12-04_PERMIT FILE - C1994082 ‎(17)‎

• Permit No: C1994082
• IBM Index Class Name: Permit File
• Doc Date: 12/4/2008
• Doc Name: Emergency Spillway Outflow Channel Requirement for Postmine Conditions
• Section_Exhibit Name: Tab 13 Attachment 13-19.1 Appendix 13-19.1-C
• Media Type: D
• Archive: No

SEDCAD 4.0
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Pond 0114: Et~erc~ency Spillway Crest - 0.5% Slope
Material: Grass mixture
Trapezoidal Channel
Left Right Freeboard Freeboard Freeboard Limiting
Bottom Sideslope Sideslope Slope (%) Retardance Mult. x Velocity
Width (ft) Ratio Ratio Classes Depth (ft) % of Depth (VxD) (fps)
10.00 3.0:1 3.0:1 0.5 D, B 1.00 5.0
Stability
Class D w/o
Freeboard Stability
Class D w/
Freeboard Capacity
Class B w/o
Freeboard Capacity
Class B w/
Freeboard
Design Discharge: 8.30 cfs 8.30 cfs
Depth: 0.66 ft 1.66 ft 1.30 ft 2.30 ft
Top Width: 13.98 ft 19.98 ft 17.82 ft 23.82 ft
Velocity: 1.04 fps 0.46 fps
X-Section Area: 7.96 sq ft 18.12 sq ft
Hydraulic Radius: 0.561 ft 0.994 ft
Froude Number: 0.24 0.08
Roughness Coefficient: 0.0687 0.2288
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SEDCAD Utility Run Printed 07-17-2008
TR-37 13-19.1-C.1 Revised 08/08