PERMFILE44218

• Permit No: C1982057
• IBM Index Class Name: Permit File
• Doc Date: 5/1/2003
• Doc Name: Post Mining Channel Design
• Section_Exhibit Name: Tab 13 Attachment 13-5B Appendix 3
• Media Type: D
• Archive: No

SEDCAD 4.0
Copyright 1998 Pamela J. Schwab
Civil Software Design
Post Mining Channel PM-2 Lower
Material: Riprap
Trapezoidal Channel

Bottom -.`left ILght
"' Freeboard Freeboard Freeboard..

Wtdth (ft) , Sadeslope
:Ratio Stdeslo
slo
Ratio
; -:
DePtii`
(R)
%of.Deptl~
° .
. ; .
. ~~•-
6.00 3.0:1 3.0:1 10.0 1.00
Simons/OSM Method -Steep Slope Design
~~ w/o,Freetioard ~ .,~w/Freeboard r:
Design Discharge: 19.70 ds
Depth: 0.28 R 1.28 R
Top Width: 7.70 R 13.70 R
velociry•:
X-Section Area: 1.94 sq R
Hydraulic Radius: 0.249
Froude Number`:
Manning's nx:
Dmin: 2.00 in
D50: 6.00 in
Dmax: 7.50 in
Velocity and Manning's n calculations may not apply for this method.
SEDCAD Utility Run Printed 12-06-2001