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
r.,..., ;,.ti+ 1 DDa -onrn D -1s i e, k,. –k
7
Structure #S (Erodible Channel
Structure Detail;
DVSSA -1
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right
I 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
1 5.5
Erodible Channel Results:
Structure #4 (Erodible Channel)
DIVSSA -4
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right Freeboard Freeboard Freeboard
w/o Freeboard w/ Freeboard
Design Discharge:
1.15 cfs
Depth:
0.44 ft 0.74 ft
Top Width:
2.21 ft 3.71 ft
Velocity:
2.34 fps
X- Section Area:
0.49 sq ft
Hydraulic Radius:
0.205 ft
Froude Number:
0.88
Structure #4 (Erodible Channel)
DIVSSA -4
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 5.5
Erodible Channel Results:
•
Filename: NSSA.sc4
Printed 10 -21 -2008
w/o Freeboard w/ Freeboard
Design Discharge:
0.48 cfs
Depth:
0.32 ft 0.62 ft
Top Width:
1.59 ft 3.09 ft
Velocity:
1.88 fps
X- Section Area:
0.25 sq ft
Hydraulic Radius:
0.148 ft
Froude Number:
0.83
Filename: NSSA.sc4
Printed 10 -21 -2008