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
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: 0.20 cfs
Depth: 0.16 ft 0.46 ft
Top Width: 0.63 ft 1.83 ft
Velocity: 4.14 fps
X-Section Area: 0.05 sq ft
Hydraulic Radius: 0.070 ft
Froude Number: 2.60
Structure #50 (Erodible Channel)
02-3F
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)
2.0:1 2.0:1 24.0 0.0350 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 0.81 cfs
Depth: 0.28 ft 0.58 ft
Top Width: 1.11 ft 2.31 ft
Velocity: 5.20 fps
X-Section Area: 0.15 sq ft
Hydraulic Radius: 0.124 ft
Froude Number: 2.46
Structure #49 6Yonerodible Channel)
0 02-3D
Filename: MB-2R.sc4 Printed 10-23-2008