PERMFILE71881

• Permit No: C1981038A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: Surface Drainage - CULVERT CAPACITIES
• Media Type: D
• Archive: Yes

ORCHARD VALLEY CULVERT "B" 100 YEAR
Design Discharge 1.840 cfs
Entrance Loss Coefficient 0.7
Pipe Length 90.000 feet
Pipe Slope 14.000 °s
_
Manning's n 0.024
Maximum Headwater = 3.000 feet
Tailwater Depth = 0.000 feet
Smallest Diameter Required to Pass Flow is 8 inches
PERFORMANCE CURVES:
Diameter: 6 inches
Headwater Discharge Flow
(ft)
------------- (cfs)
--------=---- Control
----------------------- Type
---------
0.30 0.21 Outlet (Subcritical) 1
0.60 0.43 Outlet (Subcritical) 2
0.90 _ ~ 0:64 ~ Inlet (Supercritical)-`" '~ 3 "
1.20 0.85 Inlet (Supercritical) 4
1.50 1.00 Inlet 5
1.80 1.01 Inlet 5
2.10 1.02 Inlet 5
2.40 1.04 Inlet 5
2.70 1.05 Inlet 5
3.00 1.06 Inlet 5
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Diameter:. 8 inches
Headwater Discharge Flow
(ft)
------------- (cfs)
------------- Control
------------------------ Type
--------
0..30 0.37 Outlet (Subcritical) 2
0.60 0.74 Inlet (Supercritical) 4
0.90 1.09 Inlet 5
1.20 1.39 Inlet 5
1.50 1.69 Inlet 5
1.80 1.99 Inlet 5 .
2.10 2.04 Inlet 5
2.40 2.08 Inlet 5
2.70 2.13 Inlet 5
3.00 2.17 Inlet 5

Diameter: 9 inches
Headwater Discharge Flow
(ft)
------------- (cfs)
------------ Contr
-------- ol
---------------- Type
---------
0.30 0.41 Outlet (Subcritical) 1
0.60 0.81 Outlet (Subcritical) 2
0.90 1.25 Inlet (Supercritical) 4
1.20 1.73 Inlet (Supercritical) 4
1.50 2.13 Inlet 5
1.80 2.42 Inlet 5
2.10 2.71 Inlet 5
2.40 3.00 Inlet 5
2.70 3.05 Inlet 5

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