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

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 11/19/2010
• Doc Name: 100 yr - 24 hr
• Section_Exhibit Name: Exhibit 66 SG-1 Pond
• Media Type: D
• Archive: No

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Structure #76 (Erodible Channel
DSL Y -14
Triangular Erodible Channel Inputs:
Material: Graded silts to cobbles when colloidal
Left Right
w/o Freeboard w/ Freeboard
Top Width:
1.57 ft 2.77 ft
Velocity:
4.15 fps
X- Section Area:
0.31 sq ft
Hydraulic Radius:
0.176 ft
Froude Number:
1.65
Structure #76 (Erodible Channel
DSL Y -14
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 11.3 0.0300
0.30
5.5
Erodible Channel Results:
�J
Max. Tailwater Entrance
Length (ft) Slope ( %) Manning's n Headwater () ft Loss Coef.
(ft) (Ke)
28.00 5.00 0.0240 3.00 0.00 0.9(
Structure #75 (Culvert
CSL Y -21
Culvert Inputs:
Culvert Results:
Design Discharge = 7.36 cfs
Minimum pipe diameter: 1 - 15 inch pipe(s) required
• Structure #74 tErodib /e 07anne/1
Filename: Sylvester Gulch_09292010.sc4 Printed 10 -06 -2010
w/o Freeboard w/ Freeboard
Design Discharge:
7.36 cfs
Depth:
0.69 ft 0.99 ft
Top Width:
2.77 ft 3.97 ft
Velocity:
7.65 fps
X- Section Area:
0.96 sq ft
Hydraulic Radius:
0.310 ft
Froude Number:
2.29
Max. Tailwater Entrance
Length (ft) Slope ( %) Manning's n Headwater () ft Loss Coef.
(ft) (Ke)
28.00 5.00 0.0240 3.00 0.00 0.9(
Structure #75 (Culvert
CSL Y -21
Culvert Inputs:
Culvert Results:
Design Discharge = 7.36 cfs
Minimum pipe diameter: 1 - 15 inch pipe(s) required
• Structure #74 tErodib /e 07anne/1
Filename: Sylvester Gulch_09292010.sc4 Printed 10 -06 -2010