2011-07-26_PERMIT FILE - C1982057 ‎(3)‎

• Permit No: C1982057
• IBM Index Class Name: Permit File
• Doc Date: 7/26/2011
• Doc Name: Postmine Drainage Channel Design
• Section_Exhibit Name: Tab 20 Attachment 20-1
• Media Type: D
• Archive: No

SEDCAD 4.0
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Trapezoidal Channel
Freeboard
Left Right Freeboard Freeboard
Bottom Sideslope Sideslope Slope (%)
Width (ft)
ti Mult. x
Depth (ft) % of Depth (VxD)
o
Ratio Ra
2.00 3.0:1 3.0:1 6.0 0.30
PADER Method -Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 6.70 cfs
Depth: 0.45 ft 0.75 ft
Top Width: 4.67 ft 6.47 ft
Velocity: 4.50 fps
X-Section Area: 1.49 sq ft
Hydraulic Radius: 0.309
Froude Number: 1.41
Manning's n: 0.0370
Dmin: 2.00 in
D50: 3.00 in
Dmax: 4.50 in
Material: Riprap
'.7
•
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SEDCAD Utility Run
TR-59
20-1-56
Printed 05-21-2007
Revised 05/07