2010-11-19_PERMIT FILE - C1980007 ‎(34)‎

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 11/19/2010
• Doc Name: 10 yr - 24 hr, 25 yr - 24 hr
• Section_Exhibit Name: Exhibit 66 NSSA Pond
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
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Structure #3 (Erodible Channe /1
DNSSA -2
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right
Freeboard Freeboard Freeboard
Limiting
Sideslope Sideslope Slope ( %) Manning's n
Mult. x
Velocity
Ratio Ratio
Depth (ft) % of Depth (VxD)
(fps)
2.5:1 2.5:1 2.5 0.03501
0.30 (
5.0
Erodible Channel Results:
Structure #2 (Erodible Channel)
DNSSA -3
Trapezoidal Erodible Channel Inputs:
Material: Cobbles and shingles
Freeboard
Bottom Left Right I Freeboard Freeboard Limiting
Width (ft) Sideslope Sideslope Slope ( %) Manning's n j De th ft e Mult. x Velocity
Ratio Ratio p O % of D pth (VxD) (fps)
2.00 1.0:1 1.0:1 2.5 0.03501 0.30 5.(
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge:
1.54 cfs
Depth:
0.49 ft 0.79 ft
Top Width:
2.47 ft 3.97 ft
Velocity:
2.52 fps
X- Section Area:
0.61 sq ft
Hydraulic Radius:
0.229 ft
Froude Number:
0.89
Structure #2 (Erodible Channel)
DNSSA -3
Trapezoidal Erodible Channel Inputs:
Material: Cobbles and shingles
Freeboard
Bottom Left Right I Freeboard Freeboard Limiting
Width (ft) Sideslope Sideslope Slope ( %) Manning's n j De th ft e Mult. x Velocity
Ratio Ratio p O % of D pth (VxD) (fps)
2.00 1.0:1 1.0:1 2.5 0.03501 0.30 5.(
Erodible Channel Results:
is Structure #1 (Pond
Filename: NSSA.sc4
Printed 10 -21 -2008
w/o Freeboard w/ Freeboard
Design Discharge:
4.11 cfs
Depth:
0.49 ft 0.79 ft
Top Width:
2.97 ft 3.57 ft
Velocity:
3.40 fps
X- Section Area:
1.21 sq ft
Hydraulic Radius:
0.358 ft
Froude Number:
0.94
is Structure #1 (Pond
Filename: NSSA.sc4
Printed 10 -21 -2008