2010-11-19_PERMIT FILE - C1980007 ‎(28)‎

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 11/19/2010
• Doc Name: 100 yr - 24 hr ‎(DCW-1A, -1B -5, CCW-5, DCW-6, -7, -9, -10)‎
• Section_Exhibit Name: Exhibit 66 Clean Water
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
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Structure Detail;
Structure #1 (Erodible Channel)
DCW -6
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 1.0 0.0300
0.30
4.0
Erodible Channel Results:
•
Max. Tailwater Entrance
Length (ft) Slope ( %) Manning's n Headwater ft Loss Coef.
(ft) () (Ke)
100.00 1.00 0.0240 2.00 0.00 0.90
Culvert Results:
Design Discharge = 0.69 cfs
Minimum pipe diameter: 1 - 8 inch pipe(s) required
u
Structure #2 (Culvert
CCW -6
Culvert Inputs:
Filename: DCW -6 CCW -6.sc4 Printed 10 -07 -2010
w/o Freeboard w/ Freeboard
Design Discharge:
0.69 cfs
Depth:
0.45 ft 0.75 ft
Top Width:
1.80 ft 3.00 ft
Velocity:
1.70 fps
X- Section Area:
0.40 sq ft
Hydraulic Radius:
0.201 ft
Froude Number:
0.63
Structure #2 (Culvert
CCW -6
Culvert Inputs:
Filename: DCW -6 CCW -6.sc4 Printed 10 -07 -2010