2014-11-21_PERMIT FILE - C1996083A ‎(5)‎

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 11/21/2014
• Doc Name: Appendix A through Appendix C
• Section_Exhibit Name: Volume IX Coal Mine Waste Disposal Area No. 2
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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Structure Detail:
Structure #28 (Riprap Channel)
WEST DIV - 2
Triangular Riprap Channel Inputs:
Material: Riprap
Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
1.9-8-cfs
Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
1-5:1 1.5:1 22.0
1.00
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
Filename: Pond F-10OYear.sc4
TR-81
Velocity and Manning's n calculations may not apply for this method.
App. B-58
Printed 07-25-2013
10/13
w/o Freeboard wl Freeboard
Design Discharge:
1.9-8-cfs
Pepth-:-
0.09 ft 1.09 ft
Top Width:
-
-
0.27 ft 3.27 ft
Velocity*:
X- Section Area:
0:01 sq ft
Hydraulic Radius:
0.037 ft
Froude Number*:
n*:
Dmin:
4.00 in
D50:
12.00 in
Dmax;
15.00 in
Velocity and Manning's n calculations may not apply for this method.
App. B-58
Printed 07-25-2013
10/13