2008-12-11_PERMIT FILE - C1980007A ‎(21)‎

• 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-2R
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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57
Triangular Erodible Channel Inputs:
i 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 2.0 0.0300 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 0.29 cfs
Depth: 0.29 ft 0.59 ft
Top Width: 1.14 ft 2.34 ft
Velocity: 1.78 fps
X-Section Area: 0.16 sq ft
Hydraulic Radius: 0.128 ft
Froude Number: 0.83
Structure #97 (Erodible Channe/)
D2-10A
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
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: 0.29 cfs
Depth: 0.19 ft 0.49 ft
Top Width: 1.17 ft 2.97 ft
Velocity: 2.63 fps
X-Section Area: 0.11 sq ft
Hydraulic Radius: 0.092 ft
Froude Number: 1.49
Structure #96 (frodib/e Channe/)
D2-9
• Triangular Erodible Channel Inputs:
Filename: MB-2R.sc4 Printed 10-23-2008