2008-12-11_PERMIT FILE - C1980007 ‎(3)‎

• Permit No: C1980007
• 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-5
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
•
Structure Detail:
Structure #4 jErodib/e Channel
DS-2
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 1.5 0.0300 0.30 5.5
Erodible Channel Results:
C7
w/o Freeboard w/ Freeboard
Design Discharge: 0.02 cfs
Depth: 0.11 ft 0.41 ft
Top Width: 0.43 ft 1.63 ft
Velocity: 0.81 fps
X-Section Area: 0.02 sq ft
Hydraulic Radius: 0.048 ft
Froude Number: 0.61
Structure #6 (Erodible Channel
D5-4
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 5.0 0.0300 0.30 5.5
Erodible Channel Results:
•
w/o Freeboard w/ Freeboard
Design Discharge: 0.35 cfs
Depth: 0.26 ft 0.56 ft
Top Width: 1.02 ft 2.22 ft
Velocity: 2.61 fps
X-Section Area: 0.13 sq ft
Hydraulic Radius: 0.114 ft
Froude Number: 1.29
Filename: MB-5.sc4 Printed 10-16-2008