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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24
Structure #36 (Culvert)
C4
Culvert Inputs:
Max, Entrance
Tailwater
Length (ft) Slope ( %) Manning's n Headwater Loss coef.
(ft) (ft) (Ke)
160.00 5.00 0,0240 5.00 0.00 0.90
Culvert Results:
Design Discharge = 71.54 cfs
Minimum pipe diameter: 1- 42 inch pipe(s) required
Structure #35 (Riprap Channel)
D14
Triangular Riprap Channel Inputs:
•
Material: Riprap
Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope ( %)
Mult, x
Depth (ft) % of Depth
Ratio Ratio
(VxD)
2.0:1 2.0:1 2.3
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
Structure #34 (Riprap Channel)
D4
Triangular Riprap Channel Inputs:
Filename: 25- year_Collom_Ponds (Without Riser),sc l Printed 01 -20 -2009
Exh. 7- 23A -85 Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge:
40.68 cfs
Depth:
1.88 ft 2.18 ft
Top Width:
7.52 ft 8.72 ft
Velocity:
5.75 fps
X- section Area:
7.07 sq ft
Hydraulic Radius:
0.841 ft
Froude Number:
1.05
Manning's n:
0.0350
Dmin:
2.00 In
D50:
3.00 In
Dmax:
4.50 In
Structure #34 (Riprap Channel)
D4
Triangular Riprap Channel Inputs:
Filename: 25- year_Collom_Ponds (Without Riser),sc l Printed 01 -20 -2009
Exh. 7- 23A -85 Revision Date: 12/15/10
Revision No.: PR -03