2008-12-11_PERMIT FILE - C1980007A ‎(33)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2008
• Doc Name: 100 Year, 24 Hour Surface Water Control Plan
• Section_Exhibit Name: Exhibit 66 SG-1 Pond
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
40
Material: Riprap
Left Right Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%) Mult. X
Ratio Ratio Depth (ft) % of Depth (VxD)
3.0:1 3.0:1 50.01 0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 15.21 cfs
Depth: 0.75 ft 1.05 ft
Top Width: 4.48 ft 6.28 ft
Velocity: 9.09 fps
X-Section Area: 1.67 sq ft
Hydraulic Radius: 0.354 ft
Froude Number: 2.62
Manning's n: 0.0580
Dmin: 5.00 in
D50: 9.00 in
Dmax: 12.00 in
Structure #71 [Cu/vent)
CSL Y-23
Culvert Inputs:
Culvert Results:
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater Loss Coef.
(ft) (ft) (Ke)
44.00 5.00 0.0240 3.75 0.00 0.9(
Design Discharge = 15.21 cfs
Minimum pipe diameter: 1 - 21 inch pipe(s) required
Structure #70 (Erodible Channel)
DSL )1-18
Triangular Erodible Channel Inputs:
Material: Graded silts to cobbles when colloidal
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Filename: SG-1.sc4 Printed 10-28-2008