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
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9
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Structure Detail;
Structure #1(R /prap Channel)
DCW -9
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right Freeboard Freeboard Freeboard
Width
Riprap Channel Results:
PADER Method - Steep Slope Design
•
w/o Freeboard w/ Freeboard
Bottom
Sideslope Sideslope Slope ( %)
Mult. x
(ft)
Ratio Ratio
Depth (ft) % of Depth
(VxD)
3.00 1.5:1 1.5:1 40.01
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
•
Filename: DCW -9.sc4
Printed 10 -06 -2010
w/o Freeboard w/ Freeboard
Design Discharge:
22.64 cfs
Depth:
0.63 ft 0.93 ft
Top Width:
4.90 ft 5.80 ft
Velocity:
9.08 fps
X- Section Area:
2.49 sq ft
Hydraulic Radius:
0.473 ft
Froude Number:
2.24
Manning's n:
0.0630
Dmin:
5.00 in
D50:
9.00 in
Dmax:
12.00 in
Filename: DCW -9.sc4
Printed 10 -06 -2010