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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-Structure #13 L onerodib/e Channe/1
DCW-2
Triangular Nonerodible Channel Inputs:
Material: Shotcrete
Left Right Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%) Manning's n Mult. x
Ratio Ratio Depth (ft) % of Depth (VxD)
2.0:1 2.0:1 4.0 0.0170 0.30
Nonerodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 6.03 cfs
Depth: 0.63 ft 0.93 ft
Top Width: 2.53 ft 3.73 ft
Velocity: 7.55 fps
X-Section Area: 0.80 sq ft
Hydraulic Radius: 0.283 ft
Froude Number: 2.37
• Structure #10 jErodib/e Channel)
D2R-7
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 12.0 0.0300 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 1.39 cfs
Depth: 0.37 ft 0.67 ft
Top Width: 1.47 ft 2.67 ft
Velocity: 5.17 fps
X-Section Area: 0.27 sq ft
Hydraulic Radius: 0.165 ft
Froude Number: 2.12
Structure #9 (Culvert
Filename: MB-2R.sc4 Printed 10-23-2008