2008-12-11_PERMIT FILE - C1980007A ‎(22)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2008
• Doc Name: 25 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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74
D2-3E
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 24.0 0.0300 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 0.25 cfs
Depth: 0.16 ft 0.46 ft
Top Width: 0.66 ft 1.86 ft
Velocity: 4.28 fps
X-Section Area: 0.05 sq ft
Hydraulic Radius: 0.074 ft
Froude Number: 2.63
Structure #50 (Erodible Channe/)
D2-3F
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Le'{rjHt?- ` 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 24.0 0.0350 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 1.04 cfs
Depth: 0.30 ft 0.60 ft
Top Width: 1.22 ft 2.42 ft
Velocity: 5.51 fps
X-Section Area: 0.18 sq ft
Hydraulic Radius: 0.136 ft
Froude Number: 2.49
Structure #49 (Nonerodib/e Channe/J
• D2-3D
Filename: MB-2R.sc4 Printed 10-23-2008