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
1002 -,>M7 0-1I
Max. Entrance
Tailwater
Length (ft) Slope (%) Manning's n Headwater ft Loss Coef.
(ft) ( ) (Ke)
76.00 5.00 0.0240 3.00 0.00 0.90
Culvert Results:
Design Discharge = 2.31 cfs
Minimum pipe diameter: 1 - 10 inch pipe(s) required
Structure #36 [Culvert)
CSL Y-10
Culvert Inputs:
Culvert Results:
Max. Entrance
Tailwater
Length (ft) Slope (%) Manning's n Headwater (ft) Loss Coef.
(ft) (Ke)
168.00 5.00 0.0240 10.97 0.00 0.90
Design Discharge = 15.49 cfs
Minimum pipe diameter: 1 - 18 inch pipe(s) required
Structure #34 (Erodible Channel)
DSL Y-8C
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
Depth (ft) % of Depth Velocity
(fps)
(VxD)
Ratio Ratio
1.0:1 3.0:1 10.9 0.0300 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 1.38 cfs
Depth: 0.37 ft 0.67 ft
Top Width: 1.49 ft 2.69 ft
Velocity: 4.97 fps
X-Section Area: 0.28 scl ft
Hydraulic Radius: 0.167 ft
Froude Number: 2.03
0 Structure #33 [Cu/vert)
CSL Y-9
56
Filename: SG-1.sc4 Printed 10-28-2008