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
7
Structure Detail;
Structure #5 (Erodible Chann
DNSSA -1
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right I Freeboard Freeboard Freeboard
Sideslope Sideslope Slope ( %) Manning's n 1
Limiting
Velocity
Mult. x
Ratio Ratio Depth (ft) % of Depth (VxD)
(fps)
2.5:1 2.5:1 2.5 0.03501 0.30
5.5
Erodible Channel Results:
Structure #4 (Erodible Channel
DNSSA -4
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right 1 Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope ( %) Manning's n Mult. x Velocity
Ratio Ratio Depth (ft) % of Depth (VxD) I (fps)
2.5:1 2.5:1 2.5 0.0350 0.30 5.5
Erodible Channel Results:
0
w/o Freeboard w/ Freeboard
Design Discharge:
0.73 cfs
Depth:
0.37 ft 0.67 ft
Top Width:
1.87 ft 3.37 ft
Velocity:
2.10 fps
X- Section Area:
0.35 sq ft
Hydraulic Radius:
0.174 ft
Froude Number:
0.85
Structure #4 (Erodible Channel
DNSSA -4
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right 1 Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope ( %) Manning's n Mult. x Velocity
Ratio Ratio Depth (ft) % of Depth (VxD) I (fps)
2.5:1 2.5:1 2.5 0.0350 0.30 5.5
Erodible Channel Results:
0
Filename: NSSA.sc4 Printed 10 -16 -2008
w/o Freeboard w/ Freeboard
Design Discharge:
0.31 cfs
Depth:
0.27 ft 0.57 ft
Top Width:
1.36 ft 2.86 ft
Velocity:
1.69 fps
X- Section Area:
0.18 sq ft
Hydraulic Radius:
0.126 ft
Filename: NSSA.sc4 Printed 10 -16 -2008