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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30
Riprap Channel Results:
PADER Method - Steep Slope Design
•
Left Right
Freeboard Freeboard Freeboard
184.59 cis
Depth:
Bottom Sideslope Sideslope Slope ( %)
Width (ft)
Mult. x
) % of Depth
Depth (ft)
17.68 It 18.88 ft
Velocity:
Ratio Ratio
(VXD)
21.05 sq ft
Hydraulic Radius:
1.148 ft
12.00 2.0:1 2.0:1 6.1
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
•
Structure #28 Rl ra Channel
D16
Triangular Riprap Channel Inputs:
Material; Ri reap
Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
184.59 cis
Depth:
1.42 It 1.72 ft
Top Width:
17.68 It 18.88 ft
Velocity:
8.77 fps
X- Section Area:
21.05 sq ft
Hydraulic Radius:
1.148 ft
Froude Number:
1.42
Manning's n:
0.0460
Dmin:
3.00 in
D50:
6.00 in
Dmax:
9.00 In
Structure #28 Rl ra Channel
D16
Triangular Riprap Channel Inputs:
Material; Ri reap
Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope ( %)
Mult. x
Depth (ft) % of Depth
Ratio Ratio
(VxD)
2.0:1 2.0:1 9.0
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
•
Filename: 100- year_Collom_Ponds (With Rlser).sc4 Printed 01 -22 -2009
Exh. 7 -23A -148 Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge:
22.25 cis
Depth:
1.30 ft 1.60 ft
Top Width:
5.19 ft 6.39 ft
Velocity:
6.61 fps
X- Section Area:
3.36 sq ft
Hydraulic Radius:
0.580 ft
Froude Number:
1.45
Filename: 100- year_Collom_Ponds (With Rlser).sc4 Printed 01 -22 -2009
Exh. 7 -23A -148 Revision Date: 12/15/10
Revision No.: PR -03