2021-05-12_PERMIT FILE - C1981038 ‎(3)‎

• Permit No: C1981038
• IBM Index Class Name: Permit File
• Doc Date: 5/12/2021
• Doc Name: Surface Water Analyses
• Section_Exhibit Name: Volume 7 Exhibit 06 Drainage and Culvert Calculations
• Media Type: D
• Archive: No

SI'LING UTILIT'f
ORCHARD VALLEY CULVERT "7" 10-YEAR
Design Discharge = 38,000
Entrance Loss Coefficient = 0,7
Pipe Length = 610,000
• Pipe Slope 1.000
Planning's n 0,024
Pfaximum Headwater = 5,000
Tailwater Depth = 0,000
cfs
feet
feet
feet
Smallest Diameter Required to Pass Flow is 36 inches
PERFORPIANCE CURVES:
Diameter: 30 inches
Headwater Discharge Flow
(ft)
------------- (cfs)
------------ Contr
-------- ol
-----
----
-
- Type
--

0.50
10.16
Outlet ---
-
-
(Subcritical) -------
1
1.00 10.58 Outlet (Subcritical) 1
1.50 11.03 Outlet (Subcritical) 1
2.00 13.49 Outlet (Subcritical) 1
2.50 19.46 Outlet (Subcritical) 1
3.00 22.66 Inlet (Supercritical) 4
3.50 23.56 Outlet 6
4.00 24.34 Outlet 6
4.50 25.10 Outlet 6
5.00 25.82 Outlet 6
• _____________ __
=== ===='_________________
Diameter 36 inc hes
Headwater Discharge Flow
(ft)
------------- (cfs)
------------ Contr
-------- ol
---------------- Type
---------
0.50 16.03 Outlet {Subcritical) 1
1.00 16.72 Outlet (Subcritical) 1
1.50 17.39 Outlet (Subcritical) 1
2.00 18.11 Outlet (Subcritical) 1
2.50 22.80 Outlet (Subcritical) 1
3.00 30.82 Outlet (Subcritical) 1
3.50 ,37.15 Outlet (Subcritical) 2
4.00 38.09 Outlet 6
4.50 39.33 Outlet 6
5.00 40.53 Outlet 6

Diameter: 42 inches
Headwater Discharge Flow
(ft) (cfs) Control Type
0.50 23.43 Outlet (Subcritical) 1
1.00 24.47 Outlet (Subcritical) 1
1.50 25.48 Outlet (Subcritical) 1
2.00 26.45 Outlet (Subcritical) 1
2.50 27.60 Outlet {Subcritical) 1
3.00 35.10 Outlet (Subcritical) 1
3.50 45.38 Outlet (Subcritical) 1
4.00 54.45 Outlet (Subcritical) 2
4.50 57.08 Outlet 6
~ as cQ o~ n„rtor ~
~8~