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

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Culvert Results:
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 0.9
Design Discharge = 3.70 cfs
Minimum pipe diameter: 1 - 12 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 Mult. x Velocity
Ratio Ratio Depth (ft) % of Depth (VxD) (fps)
1.0:1 3.0:1 8.1 0.0300 0.30 5.5
Erodible Channel Results:
0
w/o Freeboard w/ Freeboard
Design Discharge: 12.20 cfs
Depth: 0.89 ft 1.19 ft
Top Width: 3.57 ft 4.77 ft
Velocity: 7.66 fps
X-Section Area: 1.59 sq ft
Hydraulic Radius: 0.399 ft
Froude Number: 2.02
Structure #8 (Culvert)
CSL Y-4
Culvert Inputs:
Culvert Results:
Max. Tailwater Entrance
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 = 12.20 cfs
Minimum pipe diameter: 1 - 18 inch pipe(s) required
Structure #80 (Erodible Channe/)
DCW 4
Filename: SG-1.sc4 Printed 10-28-2008