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

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SEDCAD 4 for Windows
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 6.0 0.0300 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 0.75 cfs
Depth: 0.33 ft 0.63 ft
Top Width: 1.32 ft 2.52 ft
Velocity: 3.40 fps
X-Section Area: 0.22 sq ft
Hydraulic Radius: 0.148 ft
Froude Number: 1.47
Structure #23 (Erodible Channel)
D3-4
Triangular Erodible Channel Inputs:
Material: Graded silts to cobbles when colloidal
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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 10.0 0.0300 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 2.80 cfs
Depth: 0.49 ft 0.79 ft
Top Width: 1.98 ft 3.18 ft
Velocity: 5.74 fps
X-Section Area: 0.49 sq ft
Hydraulic Radius: 0.221 ft
Froude Number: 2.04
Structure #18 (Nonerodible Channel)
D3-4B
D3-413 Nonerodible Channel Inputs:
Material: Concrete
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Filename: MB-3(Rev_spillway).sc4
16
Printed 08-11-2009