PERMFILE58585

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 9/26/2005
• Doc Name: Appendix A to Appendix C -Report Dated 11/10/03
• Section_Exhibit Name: Coal Mine Waste Disposal Area No. 2
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
r,...,,d..m ~o°v o~..,oi~ i e..n,.,,n
21
w/o Freeboard w/ Freeboard
050: 9.00 in
Dmax: 11.25 in
Velocity and Manning's n calculations may not apply for this method.
Structure #2 (Riprap Channel
D-F2
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom LeR Right Freeboard Freeboard Freeboard
Width (R)} Sideslope Sideslope Slope (%)
Ratio Ratio De ° Mult. x
pth (ft) /° of Depth
(VxD)
3.00 1.5:1 1.5:1 10.0 1.00
Riprap Channel Results:
Simons/OSM Method -Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 5.54 cfs
Dep[h: 0.18 R 1.18 R
Top Width: 3.53 ft 6.53 R
Velocity*:
X-Section Area: 0.58 sQ R
Hydraulic Radius: 0.159
Froude Number*:
Manning's n*:
Dmin: 3.00 in
D50: 9.00 in
Dmax: 11.25 in
Velocity and Manning's n calculations may not apply for this method.
Structure #4 (Erodible Channe/~
D-F4
Triangular Erodible Channel Inputs:
Material: Shales and hardpans
li
Filename: GobPileDitches.sc4
Printed 10-29-2003
App-B - 29 - 11/03