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-6 MID LOWER
INPUT VALUES:
Shape TRAPEZOIDAL
Discharge 103.00 cfs
Slope 15.00 ~
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 0.63 ft
with Freeboard 0.93 ft
Top Width 13.78 ft
with Freeboard 15.58 ft
Velocity 13.73 fps
Cross Sectional Area 7.50 sq ft
Hydraulic Radius 0.54 ft
Manning's n 0.040
Froude Number 3.28
Dmax 1.563 ft (18.75 in)
D50 1.250 ft (15.00 in)
D10 0.417 ft ( 5.00 in)
•
7-12-85 Revised 08/04/98