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

/L/~. (l/• \.VLVL[Y• .11411YV VL1L1L1
ORCHARD VALLEY CULVERT "A" 100 YEAR
Design Discharge = 1.840 cfs
Entrance Loss Coefficient = 0.7
Pipe Length = 28.000 feet
Pipe Slope o 14.000
Manning's n 0.024
Maximum Headwater = 2.000 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)
------------- Contr
------- ol
------------------ Type
-------
0.20 0.14 Outlet (Subcritical) 1
0.40 0.28 Outlet (Subcritical) 1
0:60"- ~"~`~0:43~~ Outiet -(Subcritical) ~`"-" _2"-~
_ 0.80 0.57 _ Inlet (Supercritical) 3
1.00 0.71 Inlet (Supercritical) 4
1.20 0.85 Inlet (Supercritical) 4
1.40 0.99 Inlet 5
1.60 1.02 Inlet 5
1.80 1.04 Inlet 5
2.00 1.06 Inlet 5
• _____________ -=
___ =- =====__________ _______
Diameter 8 inc hes
Headwater Discharge Flow
(ft)
------------- (cfs)
------------- Contr
------- ol
------------------ Type
-------
0.20 0.25 Outlet (Subcritical) 1
0.40 0.49 Outlet (Subcritical) 2
0.60 0.74 Inlet (Supercritical) 4
0.80 0.99 Inlet 5
1.00 1.19 Inlet 5
1.20 1.39 Inlet 5
1.40 1.59 Inlet 5
1.60 1.79 Inlet 5
1.80 1.99 Inlet 5
2.00 2.07 Inlet 5

Diameter: 9 inches
Headwater Discharge ~ Flow
(ft)
------------- (cfs)
------------ Contr
-------- ol
----------------- Type
--------
0.20 0.27 Outlet (Subcritical) 1
0.40 0.54 Outlet (Subcritical) 2
• 0.60
0.80 0.81
1.10 Outlet
Inlet (Subcritical)
(Supercritical) 2
3
1.00 1.41 Inlet (Supercritical) 4
1.20 1.73 Inlet (Supercritical) 4
1.40 2.03 Inlet 5
1.60 2.22 Inlet 5
1.80 2.42 Inlet 5 C-j
_O 010: 7 F,1 Tnlnt _._ .. _.5 __
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