2008-12-11_PERMIT FILE - C1980007A ‎(32)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2008
• Doc Name: 25 Year, 24 Hour Surface Water Control Plan
• Section_Exhibit Name: Exhibit 66 SG-1 Pond
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
43
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Culvert Results:
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater Loss Coef.
(ft) (ft) (Ke)
20.00 5.00 0.0120 1.50 0.00 0.91
Design Discharge = 0.04 cfs
Minimum pipe diameter: 1 - 2 inch pipe(s) required
Structure #65 LErod/ble Channel)
DCW-6C
Triangular Erodible Channel Inputs:
Material: Graded silts to cobbles when colloidal
Left Right Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%) Manning's n Mult. x Velocity
Ratio Ratio Depth (ft) % of Depth (VxD) (fps)
2.0:1 2.0:1 5.0 0.0300 0.30 5.5
Erodible Channel Results:
E
w/o Freeboard w/ Freeboard
Design Discharge: 3.32 cfs
Depth: 0.60 ft 0.90 ft
Top Width: 2.40 ft 3.60 ft
Velocity: 4.61 fps
X-Section Area: 0.72 sq ft
Hydraulic Radius: 0.268 ft
Froude Number: 1.49
Structure #64 (Culvert)
CCW-1 B
Culvert Inputs:
Culvert Results:
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater (ft) Loss Coef.
(ft) (Ke)
2,210.00 5.00 0.0130 3.75 0.00 0.90
Design Discharge = 33.88 cfs
Minimum pipe diameter: 1 - 30 inch pipe(s) required
Structure #63 (Cu/vent)
CSL Y-20
Filename: SG-1.sc4 Printed 10-28-2008