2008-12-11_PERMIT FILE - C1980007A ‎(32)‎

• 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 SG-1 Pond
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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62
Max. Tailwater Entrance
•
Length (ft) Slope (%) Manning's n Headwater ft Loss Coef.
(ft) () (Ke)
55.00 5.00 0.0240 3.75 0.00 0.90
Culvert Results:
Design Discharge = 2.08 cfs
Minimum pipe diameter: 1 - 10 inch pipe(s) required
Structure #9 (Erodible Channel)
DSL Y-3
Triangular Erodible Channel Inputs:
Material: Graded silts to cobbles when colloidal
Left Right Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%) Manning's n Depth (ft) % of Mult. x Velocity
Depth
(fps)
Ratio Ratio (VxD)
1.0:1 3.0:1 8.1 0.03001 0.30 5.5
•
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 6.35 cfs
Depth: 0.70 ft 1.00 ft
Top Width: 2.79 ft 3.99 ft
Velocity: 6.51 fps
X-Section Area: 0.98 sq ft
Hydraulic Radius: 0.312 ft
Froude Number: 1.94
Structure #8 (Culvert)
CSL Y-4
Culvert Inputs:
Culvert Results:
Max. Entrance
Tailwater
Length (ft) Slope (%) Manning's n Headwater ft Loss Coef.
(ft) ( ) (Ke)
49.00 5.00 0.0240 3.75 0.00 0.90
Design Discharge = 6.35 cfs
Minimum pipe diameter: 1 - 15 inch pipe(s) required
. Structure #80 (Erodible Channel
DCW-4
Filename: SG-1.sc4 Printed 10-28-2008