2009-09-21_PERMIT FILE - C1980007A ‎(11)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 9/21/2009
• Doc Name: 100-Year Surface Water Control Plan
• Section_Exhibit Name: Exhibit 66 Pond MB-5E
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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57
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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 2.0 0.0300 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 1.85 cfs
Depth: 0.57 ft 0.87 ft
Top Width: 2.28 ft 3.48 ft
Velocity: 2.83 fps
X-Section Area: 0.65 sq ft
Hydraulic Radius: 0.255 ft
Froude Number: 0.93
Structure #97 (Erodible Channel)
D2-10A
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
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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)
3.0:1 3.0:1 27.0 0.0600 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 1.85 cfs
Depth: 0.38 ft 0.68 ft
Top Width: 2.31 ft 4.11 ft
Velocity: 4.15 fps
X-Section Area: 0.44 sq ft
Hydraulic Radius: 0.183 ft
Froude Number: 1.67
Structure #96 (Erodible Channel)
D2-9
Triangular Erodible Channel Inputs:
Material: Graded silts to cobbles when colloidal
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Filename: MB-5E(Rev_spillway).sc4
Printed 08-11-2009