2014-09-22_PERMIT FILE - C1996083A ‎(2)‎

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 9/22/2014
• Doc Name: Appendix B - Protection of Hydrologic Balance
• Section_Exhibit Name: Volume XI Coal Mine Waste Disposal Area No. 3
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
Structure Detail:
Structure #39 Npyrep Channel)
DITCHI9
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
Freeboard Freeboard Freeboard
Width (ft) Sideslope Sideslope Slope ( %)
Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
3.00 1.5:1 1.5:1 11.0
1.00
Riprap Channel Results:
Simons /OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Filename: Pond J100 Year Event 110513.sc4
1
Printed 11 -21 -2013
TR -84 Volume XI, App. B -51 02/14
w/o Freeboard w/ Freeboard
Design Discharge:
11.06 ds
- - - -- - Depth:
0.24 ft 1.24 ft
Top Width:
3.73 ft 6.73 ft
Velocity*:
X- Section Area:
0.82 sq ft
Hydraulic Radius:
0.211 ft
Froude Number *:
Manning's 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.
Filename: Pond J100 Year Event 110513.sc4
1
Printed 11 -21 -2013
TR -84 Volume XI, App. B -51 02/14