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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• Channel 52 PM-6 MID MID
INPUT VALUES:
Shape TRAPEZOIDAL
Discharge 36.00 cfs
Slope 8.00 ~
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 1.06 ft
with Freeboard 1.36 ft
Top Width 8.34 ft
with Freeboard 10.14 ft
Velocity 6.59 fps
Cross Sectional Area 5.47 sq ft
Hydraulic Radius 0.63 ft
Manning's n 0.047
Froude Number 1.43
• Dmax 0.625 ft ( 7.50 in)
D50 0.500 ft ( 6.00 in)
D10 0.167 ft ( 2.00 in)

7-12-79 Revised 08/04/98