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 #3 (Riprap Channel
RZ
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Ri ht
Bottom g Freeboard
Freeboard Freeboard
Width (ft) Sideslope Side5lope Slope (%) Mult. x
Ratio Ratio Depth (ft) % of Depth (VzD)
8.00 2.0:1 20.0:1 25.0 1.00
Riprap Channel Results:
Simons/OSM Method -Steep Slope Design
w/o Freeboard w/Freeboard-
Design Discharge: 14.49 cfs
Depth: 0.11 ft 1.11 ft
Top Width: 10.38 ft 32.38 ft
Velocity*:
X-Section Area: 0.99 sq ft
Hydraulic Radius: 0.096 ft
Froude Number*:
Manning's n*:
Dmin: 3.00 in
D50: 9.00 in
Dmax: 11.25 in
Velocity and Manning's n calculations may not apply for this method.
i
Filename: 10-Year ReGaimed.sc4 Printed 05-20-2008
TR-16 81 05/08