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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Structure #7 6Rkrap Channell
D17c
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom
w/o Freeboard w/ Freeboard
Froude Number:
0.52
Manning's n:
0.0330
Dmin:
0.50 in
D50:
0.751n
Dmax:
1.501n
Structure #7 6Rkrap Channell
D17c
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom
Freeboard Freeboard Freeboard
Sideslope sideslape Slope (%)
Width (ft)
Mult. x
Depth (ft) % of Depth
Ratio Ratio
(VxD)
12.00 2.0:1 2.0 :1 8.6
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
•
Structure #61Erodible Channell
NOb
Trapezoidal Erodible Channel Inputs:
Material: Cobbles and shingles
18
Filename: 10- year_Collom_Pond (Wifh Riser).sc4 Printed 01 -22 -2009
Exh. 7- 23A -22 Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge:
3.97 cfs
Depth:
0.13 ft 0.43 ft
Top Width:
12.51 ft 13.71 ft
Velocity:
2.53 fps
X- Section Area:
1.57 sq ft
Hydraulic Radius:
0.125 It
Froude Number:
1.26
Manning's n:
0.0430
Dmin:
1.00 In
D50:
1.50 In
Dmax:
3.00 in
•
Structure #61Erodible Channell
NOb
Trapezoidal Erodible Channel Inputs:
Material: Cobbles and shingles
18
Filename: 10- year_Collom_Pond (Wifh Riser).sc4 Printed 01 -22 -2009
Exh. 7- 23A -22 Revision Date: 12/15/10
Revision No.: PR -03