2010-11-19_PERMIT FILE - C1980007 ‎(18)‎

• 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 SG-1 Pond
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
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51
DSL Y -16
• Trapezoidal Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right
Bottom g
Freeboard
Freeboard Freeboard
Limiting
g
Width (ft) Sideslope Sideslope Slope ( %) Manning's n
Mult. x
Velocity
Ratio Ratio
ft Depth % of Depth
p () (VxD)
(fps)
10.00 2.0:1 2.0:1 5.0 0.0350
0.30
5.5
Erodible Channel Results:
Structure #73 (Erodible Channel)
• DSL Y -16A
Triangular Erodible Channel Inputs:
Material: Graded silts to cobbles when colloidal
Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
7.21 cfs
Depth:
0.21 ft 0.51 ft
Top Width:
10.85 ft 12.05 ft
Velocity:
3.27 fps
X- Section Area:
2.20 sq ft
Hydraulic Radius:
0.201 ft
Froude Number:
1.28
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:
• Structure #72 (Cu /vent)
Filename: Sylvester Gulch_09292010.sc4 Printed 10 -06 -2010
w/o Freeboard w/ Freeboard
Design Discharge:
0.84 cfs
Depth:
0.36 ft 0.66 ft
Top Width:
1.43 ft 2.63 ft
Velocity:
3.27 fps
X- Section Area:
0.26 sq ft
Hydraulic Radius:
0.160 ft
Froude Number:
1.36
• Structure #72 (Cu /vent)
Filename: Sylvester Gulch_09292010.sc4 Printed 10 -06 -2010