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
CHANNEL S2 PM-8 LOWER
INPUT VALUES:
Shape TRAPEZOIDAL
Discharge 96.00 cfs
Slope 10.00 $
Sideslopes (L and R) 3.00:1 :3.00:1
Bottom Width 10.00 feet
Freeboard .3 ft
RESULTS:
Steep Slope Design - Simons/OSM Method
Depth 0.70 ft
with Freeboard 1.00 ft
Top Width 14.19 ft
with Freeboard 15.99 ft
Velocity 11.36 fps
Cross Sectional Area 8.45 sq ft
Hydraulic Radius 0.59 ft
Manning's n 0.038
Froude Number 2.60
Dmax 1.250 ft (15.00 in)
D50 1.000 ft (12.00 in)
D10 0.333 ft ( 4.00 in)

7-12-100 Revised 05/08/98