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
(`nnv.inM 1000 _onn7 0-1. I C,K-K
57
Culvert Inputs:
0 Culvert Results:

Max. Entrance
Tailwater
Length (ft) Slope (%) Manning's n Headwater (ft) Loss Coef.
(ft) (Ke)
76.00 5.00 0.0240 3.75 0.00 0.90
Design Discharge = 1.38 cfs
Minimum pipe diameter: 1 - 8 inch pipe(s) required
Structure #32 (Culvert)
CSL Y-2B
Culvert Inputs:
Culvert Results:
Max. Entrance
Tailwater
Length (ft) Slope (%) Manning's n Headwater ft Loss Coef.
(ft) () (Ke)
48.00 5.00 0.0120 3.00 0.00 0.90
Design Discharge = 90.82 cfs
Minimum pipe diameter: 1 - 108 inch pipe(s) required
Structure #31 (Erodible Channe/)
DSL Y-20
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
Depth Velocity
(fps)
Ratio Ratio (VxD)
1.0:1 3.0:1 10.3 0.0300 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 0.58 cfs
Depth: 0.27 ft 0.57 ft
Top Width: 1.08 ft 2.28 ft
Velocity: 3.91 fps
X-Section Area: 0.15 sq ft
Hydraulic Radius: 0.121 ft
Froude Number: 1.87
•
Structure #30 (Cu/vent)
Filename: SG-1.sc4 Printed 10-28-2008