2010-11-19_PERMIT FILE - C1980007 ‎(28)‎

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 11/19/2010
• Doc Name: 100 yr - 24 hr ‎(DCW-1A, -1B -5, CCW-5, DCW-6, -7, -9, -10)‎
• Section_Exhibit Name: Exhibit 66 Clean Water
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
5
J
Structure Detail;
Structure #1 (Erodible Channe /�
DCW -7
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)
2.0:1 2.0:1 5.0 0.0300
0.30
5.5
Erodible Channel Results:
•
Filename: DCW -7.sc4 Printed 10 -07 -2010
w/o Freeboard w/ Freeboard
Design Discharge:
0.43 cfs
Depth:
0.28 ft 0.58 ft
Top Width:
1.11 ft 2.31 ft
Velocity:
2.77 fps
X- Section Area:
0.16 sq ft
Hydraulic Radius:
0.125 ft
Froude Number:
1.31
Filename: DCW -7.sc4 Printed 10 -07 -2010