2010-12-17_REVISION - C1981019 ‎(128)‎

• Permit No: C1981019
• IBM Index Class Name: REVISION
• Doc Date: 12/17/2010
• Doc Name: Exhibit 7 Item 23 Erosion and Sedimentation Part 2
• Type & Sequence: PR3
• Email Name: JRS
• Media Type: D
• Archive: No

•
SEDCAD 4 for Windows
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28
PADER Method - Steep Slope Design
Structure #32 (Culvert)
C5
Culvert Inputs:
Max. Entrance
Length (ft) Slope (%) Manning's n Headwater Tailwater Loss Coef.
(ft) (ft) (Ke)
50.00 5.00 0.0240 5.00 0.00 0.90
Culvert Results:
Design Discharge = 8.76 cfs
Minimum pipe diameter: 1- 15 inch pipe(s) required
Structure #31 65. dible Channel)
NC5
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
8.76 cfs
Depth:
0.82 ft 1.12 ft
Top Width:
3.27 ft 4.47 R
Velocity:
6.56 fps
X- Section Area:
1.34 sq ft
Hydraulic Radius:
0.365 ft
Froude Number:
1.81
Manning's n:
0.0480
Dmin:
3.00 In
D50:
6.00 In
Dmax:
9.00 in
Structure #32 (Culvert)
C5
Culvert Inputs:
Max. Entrance
Length (ft) Slope (%) Manning's n Headwater Tailwater Loss Coef.
(ft) (ft) (Ke)
50.00 5.00 0.0240 5.00 0.00 0.90
Culvert Results:
Design Discharge = 8.76 cfs
Minimum pipe diameter: 1- 15 inch pipe(s) required
Structure #31 65. dible Channel)
NC5
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right
Freeboard Freeboard Freeboard
Limiting
Sideslope Sideslope Slope ( %) Manning's n
Depth (ft) % of Depth Mult. x
Velocity
(fps)
Ratio Ratio
(VxD)
2.0:1 2.0:1 6.8 0.0350
0.30
5.5
Erodible Channel Results:
r �,
Filename: 100- year_Collom Ponds (With Riser).804 Printed 01 -22 -2009
Exh. 7 -23A -146 Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge: 0.00 cfs
Depth: 0.01 ft 0.31 ft
Top Width: 0.04 ft 1.24 ft
Filename: 100- year_Collom Ponds (With Riser).804 Printed 01 -22 -2009
Exh. 7 -23A -146 Revision Date: 12/15/10
Revision No.: PR -03