2009-09-21_PERMIT FILE - C1980007A ‎(7)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 9/21/2009
• Doc Name: 10-Year Surface Water Control Plan
• Section_Exhibit Name: Exhibit 66 Pond MB-3
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
17

Nonerodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 1.62 cfs
Depth: 0.34 ft 0.64 ft
Top Width: 1.00 ft 1.00 ft
Velocity: 4.83 fps
X-Section Area: 0.34 sq ft
Hydraulic Radius: 0.202 ft
Froude Number: 1.46
Structure #17 (Cu/vert,?
0-4
Culvert Inputs:
Culvert Results:
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater Loss Coef.
(ft) (ft) (Ke)
42.00 5.00 0.0240 1.50 0.00 0.9c
Design Discharge = 1.62 cfs
• Minimum pipe diameter: 1 - 10 inch pipe(s) required
Structure #15 jErodible Chann
D3 2B
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 2.0 0.0300 0.30 5.5
Erodible Channel Results:

w/o Freeboard w/ Freeboard
Design Discharge: 3.17 cfs
Depth: 0.70 ft 1.00 ft
Top Width: 2.80 ft 4.00 ft
Velocity: 3.24 fps
X-Section Area: 0.98 sq ft
Hydraulic Radius: 0.313 ft
Froude Number: 0.96
Filename: MB-3.sc4 Printed 08-11-2009