PERMFILE41445

• Permit No: C1981038
• IBM Index Class Name: Permit File
• Doc Date: 6/29/2004
• Section_Exhibit Name: Volume 8 Surface Drainage - Culvert Capacities
• Media Type: D
• Archive: No

SGLCAU+ CULVk:k'f S1~1NG u'1'1L1'1'Y
ORCHARD VALLEY CULVERT "M" 10 YEAR
Design Discharge 2.550 cfs
Entrance Loss Coefficient = 0.9
Pipe Length = 100.000 feet
Pipe Slope a 10.000 ~
Manning's n 0.024
Maximum Headwater = 2.500 feet
Tailwater Depth 0.000 feet
Smallest Diameter Required to Pass Flow is 9 inches
PERFORMANCE CURVES:
Diameter: 8 inches
Headwater Discharge Flow
(ft)
------ (cfs)
------------ Control
------------------------ Type
---------
-------
0.25 0.31 Outlet (Subcrltical) 2
0.50 0.62 Inlet (Supercritical) 3
0.75-- - --0.92- Inlet- 5
1.00 _ 1.19 Inlet .. _ 5
1.25 1.44 Inlet 5
1.50 1.69 Inlet 5
1.75 1.94 Inlet 5
2.00 2.02 Inlet 5
2.25 2.04 Inlet 5
2.50 2.06 Inlet 5

l~
Diameter: 9 inches
'Headwater Discharge Flow
(ft)
-------- (cfs)
------------ Contr
-------- ol
---------------- Type
---------
-----
0.25 0.34 Outlet (Subcritical) 1
0.50 0.68 Outlet (Subcritical) 2
0.75 1.02 Inlet (Supercritical) 3
1.00 1.41 Inlet (Supercritical) 4
1.25 1.81 Inlet 5
1.50 2.07 Inlet 5
1.75 2.21 Inlet 5
2.00 2.34 Inlet 5
2.25 2.48 Inlet 5
2.50 2.62 Outlet 6

Diameter: 12 inches

Headwater Discharge Flow
(ft)
------------- (cfs)
------------ Contr
-------- ol
---------------- Type
---------
0.25. 0.41 Outlet (Subcritical) 1
0.50 0.82 Outlet (Subcritical) 2
0.75 1.39 Inlet (Supercritical) 3
1.00 2.09 Inlet (Supercritical) 3
1.25 2.83 Inlet 5
1.50 3.42 Inlet 5
1.75 3.96 Inlet 5
2.00 4.
39 Inlet 5
2.25 _
4.82 Inlet 5
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