2011-06-29_PERMIT FILE - C1981019A ‎(19)‎

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

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SEDCAD 4 for Windows
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Material: Riprap
Left Right
°eft)
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope ( %)
Width
Depth (ft) % of Depth Mult. x
Ratio Ratio
(VxD)
12.00 3.0:1 3.0:1 7.9
13.30 ft
Riprap Channel Results:
Simons /OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Structure #21(Null1
Collection pt at Sta 62
Structure #20 (Riprap Channel)
Chnl Sta 62 down to S& pnd 4
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
21.77 cfs
Depth:
0.22 ft
Top Width:
13.30 ft
Velocity*:
X- Section Area:
2.73 sq ft
Hydraulic Radius:
0.204 ft
Froude Number *:
Manning's n *:
Dmin:
2.00 in
D50:
6.00 in
Dmax:
7.50 in
Velocity and Manning's n calculations may not apply for this method.
Structure #21(Null1
Collection pt at Sta 62
Structure #20 (Riprap Channel)
Chnl Sta 62 down to S& pnd 4
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Freeboard Freeboard Freeboard
Width Sideslope Sideslope Slope ( %)
Depth (ft) % of Depth Mult. x
Ratio Ratio
(VxD)
12.00 3.0:1 3.0:1 3.2
Riprap Channel Results:
Simons /OSM Method - Steep Slope Design
• w/o Freeboard w/ Freeboard
Design Discharge: 24.92 cfs
14
Filename: W Tayl Sed Pond Post Mining 1024.sc4 Printed 12 -11 -2010
Exh. 7 -20C -128 Revision Date: 12/31/10
Revision No.: TR -81
0