2016-11-07_PERMIT FILE - C1996083A

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 11/7/2016
• 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
(`......rinb �OOa �n�n Demela I Gl.umh
Structure Detail;
Structure #10 (Riprap Channel
F7
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
I Freeboard Freeboard Freeboard
Width (ft) Sideslope Sideslope Slope (%)
37.95 cfs
Ratio Ratio
Depth (ft) % of Depth Mutt. x (VxD)
3.00 2.0:1 2.0:1 2.0
0.30
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
Filename: Pond F 100Year.sc4
TR -81
Velocity and Manning's n calculations may not apply for this method.
App. B-38
Printed 09-27-2013
10/13
1
w/o Freeboard w/ Freeboard
Design Discharge:
37.95 cfs
Depth:
0.67 ft 0.97 ft
Top Width:
5.67 ft 6.87 ft
Velocity*:
X -Section Area:
2.89 sq ft
Hydraulic Radius:
0.483 ft
Froude Number*:
Manning's n*:
Dmin:
5.00 in
D50:
15.00 in
Dmax:
18.75 in
Velocity and Manning's n calculations may not apply for this method.
App. B-38
Printed 09-27-2013
10/13
1