PERMFILE114540

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 3/20/2007
• Doc Name: Appendix A to Appendix C Report, 11/10/03
• Section_Exhibit Name: Coal Mine Waste Disposal Area No. 2
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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w/o Freeboard w/ Freeboard
Design Discharge: 38.35 cfs
Depth: 0.67 R 1.67 ft
Top Width: 5.66 R 9.68 ft
Vel«ity*:
X-Section Area: 2.91 sq ft
Hyd2ulic Radius: 0.485
Froude Number*:
Manning's n*:
Dmin: 5.00 in
D60: 15.00 in
Dmax: 18.75 in
Vel«ity and Manning's n calculations may not apply for this method.
Structure #23 Ri rap Channe/~
EAST Dll/ERSION
EASlDII/ERSION
Trapezoidal Riprap Channel Inputs:
Material: Riorao
LeR
Bottom Right Freeboard Freeboard Freeboard
Sideslope
Width (ft)} Ratio Sideslope Slope (%)
Ratio
Depth (ft) % of Depth Mult x
~D)
2.00 1.5:1 1.5:1 5.0 1.00
Riprap Channel Results:
Simons/OSM Method -Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 9.42 ds
Depth: 0.37 R 1.37 ft
Top Width: 3.11 ft 6.11 ft
Vel«ity*:
X-Section Area: 0.94 sq R
Hydreulic Radius: 0.283
Froude Number*:
Manning's n*:
Dmin: 3.00 in
D50: 9.00 in
Dmax: 11.25 in
Vel«ity and Manning's n calculations may not apply for this method.
Filename: POND F.sc4 A B i9 Printed 09-28-2006
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