2015-03-11_PERMIT FILE - C1981038A ‎(3)‎

• Permit No: C1981038A
• IBM Index Class Name: Permit File
• Doc Date: 3/11/2015
• Doc Name: Surface Water Analyses
• Section_Exhibit Name: Volume 7 Exhibit 06 Drainage and Culvert Calculations
• Media Type: D
• Archive: Yes

JLU1.dUt I.UL'J Fr 1(f J1a.11'IU U11L111
ORCHARD VALLEY CULVERT "8" 10 YEAR
Design Discharge = 9.280 cfs
Entrance Loss Coefficient = 0.9
Pipe Length = 80.000 feet
Pipe Slope = 2.000
Manning's n = 0.024
Plaximum Headwater = 3.000 feet
Tailwater Depth = 0.000 feet
Smallest Diameter Required to Pass Flow is 18 inches
PERFORMANCE CURVES:
Diameter: 15 inches
Headwater Discharge Flow
(ft)
------------- (cfs)
----------- Contr
--------- ol
---------------- Type
---------
0.30 0.57 Outlet (Subcritical) 2
0.60 1.24 Inlet (Supercritical) 3
0.90 2.16 Inlet (Supercritical) 3
1.20 2.92 Outlet (Subcritical) 1
1.50 4.38 Inlet (Supercritical) 3
1.80 5.23 Outlet 6
2.10 5.55 Outlet 6
2.40 5.87 Outlet 6
2.70 6.16 Outlet 6
3.00 6.43 Outlet 6
(Transiti on
Region Data
may ed
to
be
smoothe
n
)
• --=- -
-=-
- =
-
-
-
-
d
---
Diameter: 18 inc hes
Headwater Discharge Flow
(ft)
------------- (cfs)-
----------- Contr
--------- ol
---------------- Type
---------
0.30 0.64 Outlet (Subcritical) 2
0.60 1.49 Inlet (Supercritical) 3
0.90 2.70 Inlet (Supercritical) 3
1.20 4.13 Inlet (Supercritical} 3
1.50 5.40 Outlet (Subcritical) 2
1.80 6.62 Outlet (Subcritical) 1
2.10 8.36 Inlet 5
2.40 8.92 Outlet 6
2.70 9.40 Outlet 6
3.00 9.86 Outlet 6
* (Transiti on Region - Data may need to be smoothed.)
Diameter: 21 inches
Headwater Discharge Flow
(ft) (cfs) Contr ol Type
-------------
0.30
0.60 ------------
0.71
1.73 --------
Outlet
Inlet ----------------
(Subcritical)
(Supercritical) ---------
2
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 9.61 Outlet (Subcritical) 1
7 dA 77 d7 Tnlat 5
C-7/