PERMFILE124187

• Permit No: C1981019
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 18 REVISIONS FOR SECOND FIVE-YEAR TERM
• Media Type: D
• Archive: No

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SEDCAD+ CULVERT SIZING UTILITY
GOSSARD DIVERSION CULVERT SIZING
~. Design Discharge = 31.000 cfs
Entrance Lass Coefficient = 0.9
Pipe Length = 20.000 feet
Pipe Slope = 1.000 ~
Manning's n = 0.024
Maximum Headwater = 3.500 feet
Tailwater Depth = 0.000 feet
Smallest Diameter Required to Pass Flow is 30 inches
PERFORMANCE CURVES:
Diameter: 24 inches
Headwater Discharge Flow
(ft)
------------- (cfs)
------------ Control
------------------------ Type
---------
0.35 1.95 Outlet (Subcritical) 1
0.70 3.64 Outlet (Subcritical) 1
1.05 5.12 Outlet (Subcritical) 1
1.40 6.38 Outlet (Subcritical) 1
1.75 8.43 Outlet (Subcritical) 1
2.10 11.42 Outlet (Subcritical) 1
2.45 14.70 Inlet (Supercritical) 4
2.80 17.33 Outlet 6
3.15 19.53 Outlet 6
3.50 21.50 Outlet 6
Diameter: 30 inches
Headwater Discharge Flow
(ft) (cfs) Control Type
0.35 2.45 Outlet (Subcritical) I
0.70 5.00 Outlet (Subcritical). 1
1.05 7.33 Outlet (Subcritical) 1
1.40 9.40 Outlet (Subcritical) 1
1.75 11.26 Outlet (Subcritical) 1
2.10 13.53 Outlet (Subcritical) 1
2.45 17.71 Outlet (Subcritical) 1
2.80 21.97 Outlet (Subcritical) 1
3.15 27.40 Outlet 6
3.50 31.07 Outlet 6

Revision Date 1/27/92
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