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 #41(Riarap Channel)
D2
Trapezoidal Riprap Channel Inputs:
Material: Riprap
•
Left Right
w/o Freeboard w/ freeboard
X- Section Area:
28.27 sq It
Hydraulic Radius:
1.650 ft
Froude Number:
1.20
Manning's n:
0.0440
Dmin:
5.001n
D50:
9.00 in
Dmax:
12.00 in
Structure #41(Riarap Channel)
D2
Trapezoidal Riprap Channel Inputs:
Material: Riprap
•
Left Right
Freeboard Freeboard Freeboard
Bottom Sideslope Sidesiope Slope ( %)
Width (ft)
Mult, x
Depth (ft) % of Depth
Ratio Ratio
(VxD)
12.00 2.0.1 2.0:1 6.7
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
Structure #40 (Riprap Channel)
DI
Trapezoidal Riprap Channel Inputs:
21
Material: Riprap
Filename: 25- year_Collom_Ponds (Without Riser).sc4 Printed 01 -20 -2009
Exh. 7- 23A -82 Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge:
36.56 cfs
Depth:
0.52 ft 0.82 It
Top Width:
14.10 It 15.30 ft
Velocity:
5.35 fps
X- Section Area:
6.83 sq ft
Hydraulic Radius:
0.477 It
Froude Number:
1.35
Manning's n:
0.0440
Dmin:
2.00 in
D50:
3.00 In
Dmax:
4.50 in
Structure #40 (Riprap Channel)
DI
Trapezoidal Riprap Channel Inputs:
21
Material: Riprap
Filename: 25- year_Collom_Ponds (Without Riser).sc4 Printed 01 -20 -2009
Exh. 7- 23A -82 Revision Date: 12/15/10
Revision No.: PR -03