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

•
Structure Detail;
Trapezoidal Erodible Channel Inputs:
Material: Cobbles and shingles
Left
Bottom
Freeboard Freeboard Freeboard
Llmiting
Sides ope Sideslope Slope ( %) Manning's n
Width (ft)
Mult. x
Depth (ft) % of Depth
Velocity
(fps)
Ratio Ratio
(VxD)
Velocity:
12.00 2.0:1 2.0:1 1.2 0.0350
0.30
5.5
Erodible Channel Results:
Trapezoidal Riprap Channel Inputs:
Left Right
Bottom
w/o Freeboard w/ Freeboard
Design Discharge:
1.20 cis
Depth:
0.10 It 0.40 ft
Top Width:
12.40 ft 13.60 ft
Velocity:
0.99 fps
X- Section Area:
1.21 sq ft
Hydraulic Radius:
0.097 ft
Froude Number:
0.56
Trapezoidal Riprap Channel Inputs:
Left Right
Bottom
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope ( %)
Width (ft) Ratio Ratio
Mult. x
Depth (ft) % of Depth (VXD)
12.00 2.0:1 2.0:1 0.8
0.30
Riprap Channel Results:
SEDCAD 4 for Windows i
r—Ad hi CODA
17
I
Structure #9 (Erodible Channell
D17a
Structure #8 at rap Channell
D17b
Material: Riprap
PADER Method - Mild Slope Design
•
Filename: 10-year Collom_Pond (With Riser).srA
Printed 01 -22 -2009
Exh. 7- 23A -21 Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge:
2.47 cis
Depth:
0.17 ft 0.47 ft
Top Width:
12.67 ft 13.87 ft
Velocity:
1.20 fps
X- Section Area:
2.06 sq ft
Hydraulic Radius:
0.162 ft
Filename: 10-year Collom_Pond (With Riser).srA
Printed 01 -22 -2009
Exh. 7- 23A -21 Revision Date: 12/15/10
Revision No.: PR -03