2014-09-02_PERMIT FILE - C1996083A ‎(2)‎

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 9/2/2014
• 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
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Structure Detail.,
Structure #11(9 (Riprap Channel)
DITCH -77
Triangular Riprap Channel Inputs:
Material: Riprap
Left Right
Freeboard Freeboard Freeboard
Sideslope, . Sideslope Slope (%)
21.78 ds
Ratio Ratio
Depth (ft) % of Depth Mult. x (VxO)
1.5:1 1,5:1 33.0
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
Filename: Pond J-1 0 Year Event-01 3014.sc4
1
Printed 02-04-2014
TR-84 Volume X1, App. B-22 02/14
w/o Freeboard w/ Freeboard
Design Discharge:
21.78 ds
Depth;
1.23 ft 1.53 ft_
Top Width:
3.69 ft 4.59 ft
Velocity:
9.60 fps
X-Section Area:
2.27 sq ft
Hydraulic Radius:
0.511 ft
Froude Number:
2.16
Manning's n:
0.0570
Dmin:
5.00 in
D50:
9.00 in
Dmax:
12.00 in
Filename: Pond J-1 0 Year Event-01 3014.sc4
1
Printed 02-04-2014
TR-84 Volume X1, App. B-22 02/14