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

SEDCAD 4 for Windows
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Left Right Freeboard freeboard Freeboard Limiting
Bottom Sideslope Sideslope Slope (%) Manning's n Mult. x Velocity
Width (ft) Ratio Ratio Depth (ft) °k of Depth (VxD) (fps)
5.00 2.0:1 2.0:1 4.3 0.0350 0.30 5.5
Erodible Channel Results:
•
Structure #5 tR /arap Channell
NOa
Trapezoidal Riprap Channel Inputs:
Material: Riprap
w/o freeboard w/ Freeboard
Design Discharge:
39.66 cfs
Depth:
0.88 ft 1.18 ft
Top Width:
8.50 ft 9.70 ft
Velocity:
6.71 fps
X- Section Area:
5,91 sq ft
Hydraulic Radius:
0.663 ft
Froude Number:
1.42
•
Structure #5 tR /arap Channell
NOa
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Riprap Channel Results:
PADER Method - Steep Slope Design
Freeboard
Left Right
Freeboard freeboard
Bottom Sideslope Sideslope Slope ( %)
Width (ft)
Muit. x
Depth (ft) % of Depth
Ratio Ratio
(VxD)
5.00 2.0:1 2.0:1 3.1
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
Structure #4 69 rap Channell
Filename: 25- year_Collom_Ponds (Without Riser).sc4
Printed 01 -20 -2009
Exh. 7- 23A -80 Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge:
153.71 cfs
Depth:
2.15 ft 2.45 ft
Top Width:
13.59 ft 14.79 ft
Velocity:
7,69 fps
X- Section Area:
19.97 sq ft
Hydraulic Radius:
1.367 ft
Froude Number:
1.12
Manning's n:
0.0420
Dmin:
3.00 In
D50:
6.00 In
Dmax:
9.00 In
Structure #4 69 rap Channell
Filename: 25- year_Collom_Ponds (Without Riser).sc4
Printed 01 -20 -2009
Exh. 7- 23A -80 Revision Date: 12/15/10
Revision No.: PR -03