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
e -.wo loos _9nn7 D-1. 1 QA -.h
w/o Freeboard w/ Freeboard
Manning's n:
0.0470
Dmin:
3.00 In
D50:
6.00 In
Dmax:
9.00 in
Structure #28 (Rlarap Channel)
D16
Triangular Riprap Channel Inputs:
Material: R "rap
Left Right
Freeboard Freeboard Freeboard
Sldeslope Sideslope Slope ( %)
Mult. x
Ratio Ratio
Depth (ft) % of Depth
(VxD)
2.0:1 2.0:1 9.0
0.30
Riprap Channel Results:
C
PADER Method - Steep Slope Design
Structure #27 (Erodible Channel)
28
M
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
.l
•
Filename: 25 -year Collom_Ponds (Without Ftlser).sc4 Printed 01 -20 -2009
Exh. 7- 23A -89 Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge:
18.13 cis
Depth:
1.17 ft 1.47 ft
Top Width:
4.69 ft 5.89 ft
Velocity:
6.60 fps
X- Section Area:
2.75 sq ft
Hydraulic Radius:
0.524 ft
Froude Number:
1.52
Manning's n:
0.0440
Dmin:
3.00 in
DSO:
6.00 in
Dmax:
9.00 In
Structure #27 (Erodible Channel)
28
M
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
.l
•
Filename: 25 -year Collom_Ponds (Without Ftlser).sc4 Printed 01 -20 -2009
Exh. 7- 23A -89 Revision Date: 12/15/10
Revision No.: PR -03