2008-12-04_PERMIT FILE - C1994082 ‎(9)‎

• 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 13-4A.1 Appendix 13-4A.1-C
• Media Type: D
• Archive: No

SEDCAD 4.0
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Material: Grass mixture
Trapezoidal Channel

Bottom ~ Left
Right
Retardance Freeboard
Freeboard Freeboard Limitin
g
Width (ft) Sideslope
R
ti Sideslope
ti
R Slope (%) Classes Depth (ft) % of Depth Mult. x Vef slty
(
)
a
o o
a (VxD) p
10.00 3.0:1 3.0:1 0.5 D, B 1.00 I 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 0.994
Froude Number: 0.24 0.08
Roughness Coefficient: 0.0687 0.2288

•
SEDCAD Utility Run
TR-37
Printed 02-18-2008
13-9A.1-C.1 Revised 02/08