2010-11-19_PERMIT FILE - C1980007 ‎(21)‎

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 11/19/2010
• Doc Name: 25 yr - 24 hr
• Section_Exhibit Name: Exhibit 66 Pond MB-3
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
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Structure Detail;
Structure #16 (Culvert)
C3 -3B
Culvert Inputs:
Culvert Results:
Max. Tailwater Entrance
Length (ft) Slope ( %) Manning's n Headwater ft Loss Coef.
(ft) () (Ke)
50.00 5.00 0.0240 2.00 0.00 0.91
Design Discharge = 0.85 cfs
Minimum pipe diameter: 1 - 8 inch pipe(s) required
Structure #21 (Erodible Channel)
D3 2A
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)
2.0:1 2.0:1 6.0 0.0300
0.30
5.5
Erodible Channel Results:
Structure #20 (Cu/vert1
C3 -3A
Culvert Inputs:
Filename: MB -3.sc4 Printed 09 -30 -2010
w/o Freeboard w/ Freeboard
Design Discharge:
4.21 cfs
Depth:
0.63 ft 0.93 ft
Top Width:
2.53 ft 3.73 ft
Velocity:
5.25 fps
X- Section Area:
0.80 sq ft
Hydraulic Radius:
0.283 ft
Froude Number:
1.64
Structure #20 (Cu/vert1
C3 -3A
Culvert Inputs:
Filename: MB -3.sc4 Printed 09 -30 -2010