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

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ORCHARD VALLEY CULVERT "Q" 10 YEAR
Design Discharge 19.110 cfs
Entrance Loss Coefficient = 0.9
Pipe Length 40.000 feet
Pipe Slope 2.000 ~
Manning's n 0.024
Maximum Headwater 3.000 feet
Tailwater Depth = 0.000 feet
Smallest Diameter Required to Pass Flow is 24 inches
PERFORMANCE CURVES:
Diameter: 21 inches
•
Headwater Discharge Flow
(ft)
------------- (cfs)
----------- Contr
--------- ol
---------------- Type
---------
0.30 0.71 Outlet (Subcritical) 2
0.60 1.73 inlet (Supercritical) 3
0.90 3.13 Inlet (Supercritical) 3
1.20 4.82 Inlet (Supercritical) 3
1.50 6.74 inlet (Supercritical) 3
1.80 8.34 Outlet (Subcritical) 2 *
2.10 9.59 Outlet (Subcritical) 1 *
2.40 12.66 Outlet 6
2.70 13.82 Outlet 6
3.00 14.81 Outlet 6
* (Transiti on Region - Data may need to be smoothed.)
Diameter: 24 inches
Headwater Discharge Flow
(ft)
------------- (cfs)
----------- Control
------------------------- Type
---------
0.30 0.78 Outlet (Subcritical) 2
0.60 1.95 Inlet (Supercritical) 3
0.90 3.59 Inlet (Supercritical) 3
1.20 5.51 Inlet (Supercritical) 3
1.50 7.70 ,Inlet (Supercritical) 3
1.80 10.11 Inlet (Supercritical) 3
2.10 12.75 Inlet (Supercritical) 3
2.40 13.77 Outlet (Subcritical) 1
2.70 17.54 Inlet 5
3.00 19.26 Outlet 6
(Transiti
II on Region - Data may need to be smoothed.).
E IIC6 C C C 6
Diameter:
C,
J
Headwater Discharge
(ft) (cfs)
------------------------
30 inches
Flow
Control Type
0.30 0.90
0.60 2.45
0.90 4.48
1.20 6.88
1.50 9.62
1.80 12.64
2.10 15.93
O A A 1 O q L
Inlet (Supercritical) 3
Inlet (Supercritical) 3
Inlet (Supercritical) 3
Inlet (Supercritical) 3
Inlet (Supercritical) 3
Inlet (Supercritical) 3
Inlet {Supercritical) 3
Tnle.• (C..nur~n nifin~l \ 7
C-27