2012-11-21_PERMIT FILE - C1982056A ‎(2)‎

• Permit No: C1982056A
• IBM Index Class Name: Permit File
• Doc Date: 11/21/2012
• Doc Name: COAL REFUSE DISPOSAL AREA EXPANSION
• Section_Exhibit Name: Exhibit 08EE Coal Refuse Disposal Area Expansion Drainage Designs
• Media Type: D
• Archive: Yes

SEDCAD 4.0
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Refuse Disposal Area - Ditch RDA -4, 1.0% Slope
(Design for 100 - r 24 -hr event
Material: Riprap
Trapezoidal Chanel
Left Right
Freeboard Freeboard Freeboard
Bottom Sideslo P a Sideslo a Slope ( % )
83.00 cfs
Width (ft) Ratio Ratio
Depth (ft) % of Depth)
5.00 3.0:1 3.0:1 1.0
0.30
PADER Method - Mild Slope Design
•
SEDCAD Utility Run Printed 09 -28 -2009
w/o Freeboard w/ Freeboard.
Design Discharge:
83.00 cfs
Depth:
1.76 ft 2.06 ft
Top Width:
15.55 ft 17.35 ft
Velocity:
4.59 fps
X- Section Area:
18.07 sq ft
Hydraulic Radius:
1.121 ft
Froude Number:
0.75
Manning's n:
0.0350
Dmin:
2.00 in
D50:
3.00 in
Dmax:
4.50 in
SEDCAD Utility Run Printed 09 -28 -2009