2008-12-11_PERMIT FILE - C1980007A ‎(35)‎

• 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-3
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
22
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: 2.99 cfs
Depth: 0.68 ft 0.98 ft
Top Width: 2.74 ft 3.94 ft
Velocity: 3.19 fps
X-Section Area: 0.94 sq ft
Hydraulic Radius: 0.306 ft
Froude Number: 0.96
•
Structure #3 [Culvert)
C3-1
Culvert Inputs:
Culvert Results:
Tailwater Entrance
Length (ft) Slope (%) Manning's n He Max. adwater ft Loss Coef.
(ft) () (Ke)
52.00 5.00 0.0240 3.00 0.00 0.90
Design Discharge = 8.22 cfs
Minimum pipe diameter: 1 - 15 inch pipe(s) required K
Structure #2 (Culvert) _
C3-1B
Culvert Inputs:
Culvert Results:
Length (ft) Slope (%) Manning's n He Max. adwater Tailwater Entrance
(ft) Loss Coef.
(ft) (Ke)
53.00 5.00 0.0120 1.50 0.00 0.90
Design Discharge = 0.08 cfs
Minimum pipe diameter: 1 - 2 inch pipe(s) required
Structure #1(PondJ
MB-3
Filename: MB-3.sc4 Printed 10-21-2008