APPCOR10544

• Permit No: C1994082
• IBM Index Class Name: Application Correspondence
• Doc Date: 6/14/1995
• Doc Name: PIPE CULVERT ANALYSIS COMPUTATION OF CULVERT PERFORMANCE CURVE
• Media Type: D
• Archive: No

SEDC~ CULVERT SI 2IN0 UTILITY
15" CMP ON ROCRCASTLE ROAD
Design Discharge = 5.000 cfs
Entrance Loss Coefficient = 0.9
Pipe Length = 50.000 feet
Pipe Slope = 5.000 8
Meaning's n = 0.024
Maximum Headwater = 1.660 feet
Tailwater Depth = 1.000 feet

Smallest Diameter Required to Pass Flow is 15 inches
CURVES:
Diameter: 9 inches
Headwater Discharge
(ft) (cfs) Control
Flow
Type
0.17 0.22 Outlet (Subcritical) 1
0.33 0.65 Outlet (Subcritical) 2
0.50 0.67 Inlet (Supercritical) 3
0.66 0.90 Inlet (Supercritical) 4
0.83 1.10 Inlet (Supercritical) 4
1.00 1.30 Inlet 5
1.16 1.69 Inlet 5
1.33 1.69 Outlet 6
1.69 1.88 Outlet 7
1.66 2.02 Outlet 7
1.83 2.06 outlet 7
1.99 2.10 Outlet 7
2.16 2.15 Outlet 7
2.32 2.19 Outlet 7
2.49 2.23 Outlet 7
Diameter: 12 inches
Headwater Discharge Flow
(ft) (cfs) Control Type
0.17 0.27 Outlet (Subcritical) 1
0.33 0.56 Outlet (Subcritical) 2
0.50 0.82 Inlet (Supercritical) 3
0.66 1.15 Inlet (Supercritical) 4
0.83 1.61 Inlet (Supercritical) 4
1.00 2.08 Inlet (Supercritical) 6
1.16 2.57 Outlet 6
1.33 3.04 Inlet 8
1.49 3.60 inlet 8
1.66 3.76 Inlet 8
1.83 6.05 Inlet 8
1.99 6.17 Inlet 8
2.16 6.30 Inlet 8
2.32 6.63 Inlet 8
2.49 6.56 Outlet 7 +
+ (Transiti on Region - Data may need to be smoothed.)
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