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
91
Structure #13 (Nonerodible Channel)
• 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: 3.96 cfs
Depth: 0.54 ft 0.84 ft
Top Width: 2.16 ft 3.36 ft
Velocity: 6.79 fps
X-Section Area: 0.58 sq ft
Hydraulic Radius: 0.241 ft
Froude Number: 2.31
• Structure #10 LErodib/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: 1.02 cfs
Depth: 0.33 ft 0.63 ft
Top Width: 1.31 ft 2.51 ft
Velocity: 4.77 fps
X-Section Area: 0.21 sq ft
Hydraulic Radius: 0.146 ft
Froude Number: 2.08
0 Structure 13F9 (Culvert)
Filename: MB-2R.sc4 Printed 10-23-2008