2010-12-17_REVISION - C1981019 ‎(122)‎

• Permit No: C1981019
• IBM Index Class Name: REVISION
• Doc Date: 12/17/2010
• Doc Name: Exhibit 7 Item 23 Erosion and Sedimentation Control Plan
• Type & Sequence: PR3
• Email Name: JRS
• Media Type: D
• Archive: No

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SEDCAD 4 for Windows
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Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Freeboard Freeboard Freeboard
Width (ft) Sideslope Sideslope Slope ( %)
Depth (ft) % of Depth Mult, x
Ratio Ratio
(VxD)
5.00 2.0:1 2.0:1 4.5
0.03
Riprap Channel Results:
PADER Method - Steep Slope Design
•
20
Structure #3JRI rah Channel)
NC2
Trapezoidal Riprap Channel Inputs:
Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
202.40 cfs
Depth:
2.32 ft 2.35 ft
Top Width:
14.30 ft 14.42 ft
Velocity:
9.03 fps
X- Section Area:
22.42 sq ft
Hydraulic Radius:
1.457 ft
Froude Number:
1.27
Manning's n:
0.0450
Dmin:
5.00 In
D50:
9.00 in
Dmax:
12.00 In
20
Structure #3JRI rah Channel)
NC2
Trapezoidal Riprap Channel Inputs:
Left Right
Freeboard Freeboard Freeboard
Width Bottom Sideslope Sideslope Slope ( %)
Depth (ft) p % of Depth MUIL x
p (
Ratio Ratio
(VxD)
5.00 2.0:1 2.0:1 3.7
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
Filename: 25 -year Collom_Ponds (Without Riser) =4 Printed 01- 20.2009
Exh. 7- 23A -81 Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge:
257.13 cis
Depth:
2.71 ft 3.01 ft
Top Width:
15.85 ft 17.05 ft
Velocity:
9.10 fps
Filename: 25 -year Collom_Ponds (Without Riser) =4 Printed 01- 20.2009
Exh. 7- 23A -81 Revision Date: 12/15/10
Revision No.: PR -03