2008-12-11_PERMIT FILE - C1980007A ‎(22)‎

• 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 Pond MB-2R
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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92
C2R-5
• Culvert Inputs:
Culvert Results:
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater (ft) Loss Coef.
(ft) (Ke)
45.00 5.00 0.0120 1.75 0.00 0.90
Design Discharge = 1.39 cfs
Minimum pipe diameter: 1 - 8 inch pipe(s) required
Structure #8 (Erodible Channe/)
D2R-5
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 8.0 0.0300 0.30 5.5

Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater Loss Coef.
(ft) (ft) (Ke)
60.00 5.00 0.0240 3.00 0.00 0.90
Culvert Results:
Design Discharge = 9.10 cfs
0 Minimum pipe diameter: 1 - 18 inch pipe(s) required
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 3.53 cfs
Depth: 0.56 ft 0.86 ft
Top Width: 2.25 ft 3.45 ft
Velocity: 5.59 fps
X-Section Area: 0.63 sq ft
Hydraulic Radius: 0.251 ft
Froude Number: 1.86
Structure #7 (Culvert)
C2R-4
Culvert Inputs:
Filename: MB-2R.sc4 Printed 10-23-2008