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
Cnrnminhh 10OR -9nn7 D -1. I cZ —.h
i
is
w/o Freeboard w/ Freeboard
Froude Number: 0.81
Structure #3 (Erodible Channel
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 0.0350
0.30
5.0
Erodible Channel Results:
•
Structure #2 (Erodible Channel
DNSSA -3
Trapezoidal Erodible Channel Inputs:
Material: Cobbles and shingles
Bottom Left Right Freeboard Freeboard Freeboard
w/o Freeboard w/ Freeboard
Design Discharge:
1.01 cfs
Depth:
0.42 ft 0.72 ft
Top Width:
2.11 ft 3.61 ft
Velocity:
2.27 fps
X- Section Area:
0.45 sq ft
Hydraulic Radius:
0.196 ft
Froude Number:
0.87
Structure #2 (Erodible Channel
DNSSA -3
Trapezoidal Erodible Channel Inputs:
Material: Cobbles and shingles
Bottom Left Right Freeboard Freeboard Freeboard
Limiting
Width (ft) Sideslope Sideslope Slope ( %) Manning's n Mult. x
Velocity
Depth (ft) /o o
Ratio Ratio of Depth (V xD)
(fps)
2.00 1.0:1 1.0:1 2.5 0.0350 0.30
5.0
Erodible Channel Results:
•
Filename: NSSA.sc4 Printed 10 -16 -2008
w/o Freeboard w/ Freeboard
Design Discharge:
2.66 cfs
Depth:
0.38 ft 0.68 ft
Top Width:
2.76 ft 3.36 ft
Velocity:
2.97 fps
X- Section Area:
0.90 sq ft
Filename: NSSA.sc4 Printed 10 -16 -2008