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
rnn..rinYd 1000 Ann7 D-1 I Cnh..-K
39
•
w/o Freeboard w/ Freeboard
Velocity: 4.64 fps
X-Section Area: 3.97 sq ft
Hydraulic Radius: 0.341 ft
Froude Number: 1.39
Structure #73 (Erodible Channel)
DSL Y-16A
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 5.0 0.0300 0.30 5.5
Erodible Channel Results:
•
w/o Freeboard w/ Freeboard
Design Discharge: 1.70 cfs
Depth: 0.47 ft 0.77 ft
Top Width: 1.87 ft 3.07 ft
Velocity: 3.91 fps
X-Section Area: 0.44 sq ft
Hydraulic Radius: 0.209 ft
Froude Number: 1.43
(Cu/vent)
Structure #72
CSL Y-22
Culvert Inputs:
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 = 20.15 cfs
Minimum pipe diameter: 1 - 24 inch pipe(s) required
Structure #79 (R/,nrap Channel)
DSL Y-18A
Triangular Riprap Channel Inputs:
Filename: SG-1.sc4 Printed 10-28-2008