2009-03-02_PERMIT FILE - C1980004 ‎(15)‎

• Permit No: C1980004A
• IBM Index Class Name: Permit File
• Doc Date: 3/2/2009
• Section_Exhibit Name: Appendix M Hydrologic Calculations
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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Structure Detai/;
Structure #22 (Riprap Chann%~
DITCH 9
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right Freeboard Freeboard Freeboard
~~ (ft) Sideslope Sideslope Slope;(%) Mult x
:.Ratio Ratio Depth .(ft) % of Depth ~~~
3.00 1.5:1 1.5:1 3.8 1.00
Riprap Channel Results:

Simons/OSM Method -Steep Slope Design
w/o Freeboard w/. f=reeboard.
Design Discharge: 29.46 cfs
Depth: 0.58 ft 1.58 ft
Top width: 4.73 ft 7.73 ft
Velocity*:
X-Section Area: 2.24 sq ft
Hydraulic Radius: 0.440 ft
Froude Number*:
Manning's n*:
Dmin: 4.00 in
D50: 12.00 in
Dmax: 15.00 in
Velocity and Manning's n calculations may not apply for this method.
Filename: SEDIMENT POND_100.sc4 Printed 05-16-2008
TR-16 65 05/08