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 #28 6Mra
p Chann
DITCH 1 - -18
Triangular Riprap Channel Inputs:
Material: Riprap
Left Right Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
Ratio Ratio Depth (ft) of Depth Mult x (VxD]
1.5:1 1,5:1 15.0. 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 J-1 0 Year Event-01 3014.sr,4
TR-84 Volume X1, App. B-27
1
Printed 02-04-2014
02/14
w/o, Freeboard w/ Freeboard
Design Discharge:
0.79 ds
Depth:
0.13 ft 1.13 ft
Top Width:
0.40 ft 3.40 ft
Velocity*:
X-Section Area:
0.03 sq ft
Hydraulic Radius:
0.056 ft
Froude Number*:
Manning's n*:
Dm1n:
D50:
Dmax:
3.00 In
9.00 in
11.25 in
Velocity and Manning's n calculations may not apply for this method.
Filename: Pond J-1 0 Year Event-01 3014.sr,4
TR-84 Volume X1, App. B-27
1
Printed 02-04-2014
02/14