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
f:nnvrinht 'I°Oq Pomclo I Gh~~rah
Channel 005-Gulch: Reach LL-K - 11% Slope
Material: Riprap
Trapezoidal Channel
Freeboard
Left Right Freeboard Freeboard
Bottom Sideslope Sideslope Slope (%)
Width (ft) Mult. x
Depth (ft) % of Depth
Ratio Ratio (VxD)
2.00 3.0:1 3.0:1 11.0 0.36
PADER Method -Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 14.40 cfs
Depth: 0.60 ft 0.96 ft
Top Width: 5.60 ft 7.76 ft
Velocity: 6.32 fps
X-Section Area: 2.28 sq ft
Hydraulic Radius: 0.393
Froude Number: 1.74
Manning's n: 0.0420
Dmin: 2.00 in
D50: 3.00 in
Dmax: 4.50 in
•

SEDCAD Utility Run Printed 05-21-2007
TR-S9 20-1-52 Revised OS/07