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 4.0
Culvert 3-9
Culvert Inputs:
Max. Entrance
Length (ft) Slope (%) Manning's n Headwater Tailwater (ft) Loss Coef.
11 (ft) (Ke)
20.00 0.50 0.0240 2.25 0.00 0.90
Culvert Results:
Minimum pipe diameter: I - 24 inch pipe(s) required
Detailed Performance Curves
Design Discharge = 11.25 cfs
Maximum Headwater = 2.25 ft
(BOLD indicates design pipe size)
Design Notes:
"Culvert J-9" consists of two 24" culverts.
Design provided shows one 24" culvert with 2.25' of head can
convey more than half of the flow.
Therefore, two 24" culverts can safely convey 100% of the flow.
SEDCAD Utility Run
TR-84
Volume X1, App. B-58
1
Printed 01-29-2014
02/14
Discharge
Discharge
Discharge
Headwater
(cfs)
(cfs)
(cfs)
(ft)
21 in)
24 11n)
30 in)
0.22
0.76
0.84
0.97
0.45
1.66
1.95
2.45
0.67
2.53
3.07
4.10
0.90
3.30
4.09
5.70
1.13
3.99
5.02
7.18
1.35
4.91
5.87
8.55
1.58
6.36
7.11
9.82
1.80
7.88
8.91
11.01
2.03
9.40
10.50
10.79
12.67
13.00
15.58
2.25
2.47
11.79
14.22
18.22
2.70
I - - - -
12.95
- --------------- --------- --- -
15.95
20.90
2.92
14.02
17.50
23.57
3.15
15.01
18.93
26.26
3.37
15.94
20.26
28.76
Design Notes:
"Culvert J-9" consists of two 24" culverts.
Design provided shows one 24" culvert with 2.25' of head can
convey more than half of the flow.
Therefore, two 24" culverts can safely convey 100% of the flow.
SEDCAD Utility Run
TR-84
Volume X1, App. B-58
1
Printed 01-29-2014
02/14