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
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45
DSG-1
Trapezoidal Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right Freeboard Freeboard Freeboard Limiting
Bottom Sideslope Sideslope Slope (%) Manning 's n Velocity
Width (ft) Depth (ft) % of Depth Mult. x f Ratio Ratio (VxD) (p s)
2.00 2.0:1 2.0:1 4.0 0.03501 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 17.09 cfs
Depth: 0.83 ft 1.13 ft
Top Width: 5.33 ft 6.53 ft
Velocity: 5.60 fps
X-Section Area: 3.05 sq ft
Hydraulic Radius: 0.533 ft
Froude Number: 1.30
Structure #59 (Erodible Channel)
OSL Y-13
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 7.3 0.0300 0.30 I 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 0.50 cfs
Depth: 0.27 ft 0.57 ft
Top Width: 1.10 ft 2.30 ft
Velocity: 3.31 fps
X-Section Area: 0.15 sq ft
Hydraulic Radius: 0.123 ft
Froude Number: 1.57
Structure #58 [Culvert)
CSG1
Filename: SG-1.sc4 Printed 10-28-2008