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 #28 (Riprap Channel
DITCH J -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 I 1.00
Riprap Channel Results:
Simons /4SM 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.sc4
1
Printed 02 -04 -2014
TR -84 Volume XI, App. B -27 02/14
w /o. Freeboard w/ Freeboard
Design Discharge:
0.79 cfs
Depth:
0.13 ft 1.13 ft
Top Width:
0.40 ft 3.40 ft
Velocity *: —
- -- -- -
X-Sectlon Area:
0.03 sq ft
Hydraulic Radius:
0.056 ft
Froude Number *:
Manning's n *:
--------------------------------------
Dmin:
-
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.sc4
1
Printed 02 -04 -2014
TR -84 Volume XI, App. B -27 02/14