PERMFILE133709

• Permit No: C1980005A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: POST-MINING DRAINAGE CONTROL
• Section_Exhibit Name: TAB 7 APPENDIX 7-12
• Media Type: D
• Archive: Yes

SEDCAD+ RIPRAP CHANNEL DESIGN
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• SENECA II CHANNEL 8
INPUT VALUES:
Shape TRAPEZOIDAL
Discharge 75.00 cfs
Slope 10.60 $
Sideslopes (L and R) 3.00:1 3.00:1
Bottom Width 2.00 feet
Freeboard 0.3 ft
RESULTS:
Steep Slope Design - PADER Method
Depth 1.37 ft
with Freeboard 1.67 ft
Top Width 10.21 ft
with Freeboard 12.01 ft
Velocity 8.97 fps
Cross Sectional Area 8.36 sq ft
Hydraulic Radius 0.78 ft
Manning~s n 0.046
Froude Number 1.75
• Dmax 0.625 ft ( 7.50 in)
D50 0.500 ft ( 6.00 in)
D10 0.167 ft ( 2.00 in)
•
7-12-95 Revised 05/08/98