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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29

Elevation
(R)
Emergency
Spillway (cfs) Combined
Total
Discharge
(~)
7,921.15 0.000 0.000
7,921.20 0.000 0.000
7,921.50 0.000 0.000
7,922.00 0.000 0.000
7,922.50 0.000 0.000
7,923.00 0.000 0.000
7,923.50 0.000 0.000
7,924.00 0.000 0.000
7,924.25 0.000 0.000
7,924.50 5.050 5.050
7,925.00 15.151 15.151
Structure #7 (R/pray Channel)
SEC. 21 DITCH S
Trapezoidal Riprap Channel Inputs:
•
Material: RiDrat7
Bottom Lek Right Freeboard Freeboard Freeboard
Width (R) Sideslope Sideslope Slope (%) De th R %of De th
p () p Mult. x
Ratio Ratio (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: 5.40 cfs
Depth: 0.06 R 1.06 R
Top Width: 12.24 R 16.24 R
Velocity*:
X-Section Area: 0.73 sq ft
Hydraulic Radius: 0.060 ft
Froude Number*:
Manning's n*:
Dmin: 2.00 in
D60: 6.00 in
Dmax: 7.50 in
Velocity and Manninq's n calculations may not apply for this method.
•
Filename: STSec21Ten24.030807.sc4
Exh.7-20B-33
Printed 03-09-2007
Revision Date: 3/12/07
Revision No.: PR-02