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
Rnnvrinht ~OOA Pomch I Ghumh
Channel 005-Gulch: Reach LL-K - 6% Slope
Material: Riprag
Trapezoidal Channel
Left Right Freeboard Freeboard Freeboard
Widtho(ft) Sideslope Sideslope .Slope (%) Depth (ft) % of Depth Mult. x
Ratio Ratio (VxD)
2.00 3.0:1 3.0:1 6.0 0.36
PADER Method -Steep Slope Design
•
•
w/o Freeboard w/ Freeboard
Design Discharge: 14.40 cfs
Depth: 0.69 ft 1.05 ft
Top Width: 6.13 ft 8.29 ft
Velocity: 5.15 fps
X-Section Area: 2.80 sq ft
Hydraulic Radius: 0.440
Froude Number: 1.34
Manning's n: 0.0410
Dmin: 2.00 in
D50: 3.00 in
Dmax: 4.50 in
SEDCAD Utility Run Printed 05-21-2007
TR-S9 20-1-51 Revised OS/07