2010-12-17_REVISION - C1981019 ‎(128)‎

• Permit No: C1981019
• IBM Index Class Name: REVISION
• Doc Date: 12/17/2010
• Doc Name: Exhibit 7 Item 23 Erosion and Sedimentation Part 2
• Type & Sequence: PR3
• Email Name: JRS
• Media Type: D
• Archive: No

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SEDCAD 4 for Windows
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37
PADER Method - Steep Slope Design
•
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Structure #1162 r,? Channell
RDI
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
41.08 cfs
Depth:
0.92 ft 1.22 ft
Top Width:
8.68 ft 9.88 ft
Velocity:
6.53 fps
X- Section Area:
6.29 sq ft
Hydraulic Radius:
0.690 ft
Froude Number:
1.35
Manning's n:
0.0510
Dmin:
3.00 In
D50:
6.00 In
Dmax:
9.00 in
•
l
Structure #1162 r,? Channell
RDI
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Freeboard Freeboard Freeboard
Width Bottom Sideslope Sideslope Slope ( %)
Depth (ft) % of Depth Mult. x
Ratio Ratio
(VxD)
5100 2.0:1 2.0:1 3.2
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
Structure # 10 fflon d
LCX -IN
Filename: 25 -year Collom_Ponds (Without Riser).sc4
Exh. 7- 23A -98
Printed 01 -20 -2009
Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboa w/ Freeboard
Design Discharge:
783.47 cis
Depth:
4.67 ft 4.97 ft
Top Width:
23.69 ft 24.89 ft
Velocity:
11.69 fps
X- Section Area:
67.04 sq ft
Hydraulic Radius:
2.589 ft
Froude Number:
1.22
Manning's n:
0.0430
Dmin:
7.00 in
D50:
12.00 in
Dmax:
18.00 In
Structure # 10 fflon d
LCX -IN
Filename: 25 -year Collom_Ponds (Without Riser).sc4
Exh. 7- 23A -98
Printed 01 -20 -2009
Revision Date: 12/15/10
Revision No.: PR -03