2011-06-29_PERMIT FILE - C1981019A ‎(20)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 6/29/2011
• Doc Name: Section 28 Sedimentation Pond
• Section_Exhibit Name: Exhibit 07 Item 20 Part A -ST
• Media Type: D
• Archive: Yes

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SEDCAD 4 for Windows
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Structure #21 (Riprao Channel
Sec 28 (contour) Collector Ditch
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom
w/o Freeboard w/ Freeboard
Design Discharge:
59.17 cfs
Depth:
1.86 ft
Top Width:
3.73 ft
Velocity:
17.05 fps
X- Section Area:
3.47 sq ft
Hydraulic Radius:
0.659 ft
Froude Number:
3.11
Structure #21 (Riprao Channel
Sec 28 (contour) Collector Ditch
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope ( %)
Width (ft)
Mult. x
Ratio Ratio
Depth (ft) % of Depth
(VxD)
12,00 2.0:1 2.0:1 16.0
1.00
Riprap Channel Results:
Simons /OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Structure #20
Undist above Null 14 ovrland
Structure #19
Hdwtr Trib 8, TS and seeded
Structure #18 ( Riprap Channel)
Filename: Sec 28 100 24.sc4
Exh. 7- 20A -49
10
Printed 12 -08 -2010
Revision Date: 12/31/10
Revision No.: TR -81
w/o Freeboard w/ Freeboard
Design Discharge:
Depth:
59.31 cfs
0.36 ft 1.36 ft
Top Width:
13.46 ft 17.46 ft
Velocity*:
X- Section Area:
4.63 sq ft
Hydraulic Radius:
0.340 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.
Structure #20
Undist above Null 14 ovrland
Structure #19
Hdwtr Trib 8, TS and seeded
Structure #18 ( Riprap Channel)
Filename: Sec 28 100 24.sc4
Exh. 7- 20A -49
10
Printed 12 -08 -2010
Revision Date: 12/31/10
Revision No.: TR -81