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 #23 (Riprap Channel
DITCH 10-1
Structure Detai/;
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom; Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
Width (ft)
Mint. x
Ratio Ratio Depth (ft) % of Depth
Nx~)
3.00 1.5:1 1.5:1 2.6 1.00
Riprap Channel Results:

Simons/OSM Method -Steep Slope Design
w/o Freeboard, .. w/ Freeboard.-:
Design Discharge: 7.32 cfs
Depth: 0.29 ft 1.29 ft
Top Width: 3.88 ft 6.88 ft
Velocity*:
X-Section Area: 1.01 sq ft
Hydraulic Radius: 0.248 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.
Filename: SEDIMENT POND_10.sc4 Printed 05-16-2008
TR-16 34 05/08