2011-06-29_PERMIT FILE - C1981019A ‎(16)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 6/29/2011
• Doc Name: Section 21 Sedimentation Pond
• Section_Exhibit Name: Exhibit 07 Item 20 Part B -ST
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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21
Bottom LeR Right Freeboard Freeboard Freeboard

Width (R) Sideslope Sideslope Slope (%) Mult. x
Ratio Ratio Depth (R) %of Dep[h (VxD)
12.00 2.0:1 2.0:1 13.5 1.00
Riprap Channel Results:
Simons/OSM Method -Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 11.24 cfs
Depth: 0.10 R 1.10 ft
Top Width: 12.41 ft 16.41 R
velocity*:
X-Sec[ion Area: 1.24 sq R
Hydraulic Radius: 0.099 R
Froude Number*:
Manning's n*:
Dmin: 2.00 in
D60: 6.00 in
Dmax: 7.50 in

Velocity and Manning's n calculations may not apply for this method.
Structure #4 (Riprap Channel/
SEC. 21 DITCH 3
Trapezoidal Riprap Channel Inputs:
w/o Freeboard w/ Freeboard
Design Discharge: 22.90 ds
Depth: 0.16 ft 1.16 ft
Top Width: 12.66 R 16.66 ft
Velocity*:
X-Section Area: 2.02 sq R
Hydraulic Radius: 0.159 ft
Froude Number*:
Bottom LeR Right Freeboard Freeboard Freeboard
Sideslope
Width (R) Sideslope Slope (%)
i Mult. z
Depth (ft) % of Depth
Ratio Ra[
o (VxD)
12.00 2.0:1 2.0:1 16.4 1.00
Riprap Channel Results:
Simons/OSM Method -Steep Slope Design
•
Material: Riorao
Material: RIDraD
Filename: STSec2lHUntlred24.010807.sc4
Etch. 7-20B-75
Pdntetl 01-OB-2007
Revision Date: 1/05/07
Revison No.: PR-02