2011-06-17_PERMIT FILE - C1981018A ‎(2)‎

• Permit No: C1981018A
• IBM Index Class Name: Permit File
• Doc Date: 6/17/2011
• Doc Name: B-Seam Dewatering System
• Section_Exhibit Name: Illustration 55
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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•
Elevation
(ft)
Emergency
Spillway (cfs)
Combined
Total
Discharge
(cfs)
4.20
1.127
1.127
4.25
1.408
1.408
4.30
1.690
1.690
4.35
1.972
1.972
4.40
2.254
2.254
4.45
2.535
2.535
4.50
2.817
2.817
Structure #7 (Erodible Channel)
Channel out of Pond #2
Trapezoidal Erodible Channel Inputs:
Material: Alluvial silts noncolloidal
Left Right
Bottom
Freeboard
Freeboard Freeboard
Limiting
g
Sideslope Sideslope Slope (%j Manning's n
Width (ft)
Mult. x
Depth (ft) % of Depth
Velocity
(fps)
Ratio Ratio
, (VxD)
Velocity:
12.00 3.0:1 3.0:1 3.0 0.0200
X- Section Area:
2.0
Erodible Channel Results:
Structure #4 (Pond)
Last Chance Pond
Pond Inputs:
Initial Pool Elev:
w/o Freeboard w/ Freeboard
Design Discharge:
0.88 cfs
Depth:
0.04 ft
Top Width:
12.27 ft
Velocity:
1.61 fps
X- Section Area:
0.54 sq ft
Hydraulic Radius:
0.044 ft
Froude Number:
1.35
Initial Pool Elev:
4.00 ft
Initial Pool:
0.20 ac -ft
*Sediment Storage:
0.00 ac -ft
Dead Space:
20.00%
• *Sediment capacity based on A verage Annual R of 16.6 for 10 year(s)
18
Filename: Dewatering model - 10yr concrete outlet 5- 11.sc4 Printed 05 -19 -2011