2009-09-21_PERMIT FILE - C1980007A ‎(8)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 9/21/2009
• Doc Name: 25-Year Surface Water Control Plan
• Section_Exhibit Name: Exhibit 66 Pond MB-3
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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Structure #16 (Culvert)
• C3-4A
Culvert Inputs:
•
Culvert Results:
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater ft Loss Coef.
(ft) (Ke)
12.00 5.00 0.0120 2.25 0.00 0.90
Design Discharge = 6.95 cfs
Minimum pipe diameter: 1 - 15 inch pipe(s) required
Structure #14 (Erodible Channel)
D3-2
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)
3.0:1 3.0:1 6.0 0.0300 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 8.46 cfs
Depth: 0.70 ft 1.00 ft
Top Width: 4.18 ft 5.98 ft
Velocity: 5.81 fps
X-Section Area: 1.46 sq ft
Hydraulic Radius: 0.330 ft
Froude Number: 1.74
•
Structure #12 (Culvert)
C3-2
Culvert Inputs:
Culvert Results:
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater (ft) Loss Coef.
(ft) (Ke)
262.00 5.00 0.0120 3.00 0.00 0.90
Design Discharge = 1.83 cfs
18
Filename: MB-3(Rev_spillway).sc4
Printed 08-11-2009