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 #7JR /"rap Channel)
D17c
Trapezoidal Riprap Channel Inputs:
Left Right
w/o Freeboard w/ Freeboard
Froude Number: •
0.64
Manning's n:
0.0330
Dmin:
1.00 In
D50:
1.50 in
Dmax:
3.00 In
Structure #7JR /"rap Channel)
D17c
Trapezoidal Riprap Channel Inputs:
Left Right
Freeboard Freeboard Freeboard
Bottom Sideslope Sideslope Slope (%)
Width (ft)
n Mult. x
/o
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 #6 (Erodible Channell
NOZ;
Trapezoidal Erodible Channel Inputs:
Material: Cobbles and shingles
Filename: 25 -year Collom_Ponds (Without Riser).sc4
18
Printed 01 -20 -2009
Exh. 7- 23A -79 Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge:
39.25 cfs
Depth:
0.51 ft 0.81 ft
Top Width:
14.03 ft 15.23 ft
Velocity:
5.94 fps
X- Section Area:
6.60 sq ft
Hydraulic Radius:
0.463 ft
Froude Number:
1.53
Manning's n:
0.0440
Dmin:
2.00 In
D50:
100 in
Dmax:
4.50 in
Structure #6 (Erodible Channell
NOZ;
Trapezoidal Erodible Channel Inputs:
Material: Cobbles and shingles
Filename: 25 -year Collom_Ponds (Without Riser).sc4
18
Printed 01 -20 -2009
Exh. 7- 23A -79 Revision Date: 12/15/10
Revision No.: PR -03