2008-12-11_PERMIT FILE - C1980007A ‎(17)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2008
• Doc Name: 10 Year, 24 Hour Surface Water Control Plan
• Section_Exhibit Name: Exhibit 66 Pond MB-1
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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29
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Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater ft Loss Coef.
(ft) () (Ke)
46.00 5.00 0.0240 1.50 0.00 0.9
Culvert Results:
Design Discharge = 0.48 cfs
Minimum pipe diameter: 1 - 6 inch pipe(s) required
Structure #29 (Erodible Channel
D1-5A
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 12.0 0.0300 0.30 5.5
Erodible Channel Results:

Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater (ft) Loss Coef.
(ft) (Ke)
36.00 5.00 0.0120 1.75 0.00 0.90
Culvert Results: Y
Design Discharge = 1.16 cfs
. Minimum pipe diameter: 1 - 8 inch pipe(s) required
Structure #27 (Nonerodib/e Channel)
w/o Freeboard w/ Freeboard
Design Discharge: 1.16 cfs
Depth: 0.34 ft 0.64 ft
Top Width: 1.37 ft 2.57 ft
Velocity: 4.94 fps
X-Section Area: 0.24 sq ft
Hydraulic Radius: 0.154 ft
Froude Number: 2.10
Structure #28 (Cu/vert?
CI-9A
Culvert Inputs:
Filename: MB-1.sc4 Printed 10-21-2008