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

0
SEDCAD 4 for Windows I
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23
w/o Freeboard w/ Freeboard
D50: 6.00 in
Dmax: 9.00 In
Structure 4W (Culvert
0
Culvert Inputs:
Max. Entrance
Length (ft) Slope ( °k) Manning's n Headwater Tallwater Loss Coef.
(ft) (ft) (Ke)
190.00 5.00 0.0240 5.00 0.00 0190
Culvert Results:
Design Discharge = 50.90 cfs
Minimum pipe diameter: 1- 36 inch pipe(s) required
Structure #37 (R/aran Channel1
• D8
Triangular Riprap Channel Inputs:
Material: Riprap
Left Right
Freeboard Freeboard Freeboard
Sideslope Sldeslope Slope ( %)
Mult. x
Ratio Ratio
Depth (ft) % of Depth (VxD)
2.0:1 2.0 :1 0.3
0.30
Riprap Channel Results:
PADER Method - Mild Slope Design
r:
Fliename: 10 -year Collom_Pond With Riser).sc4 Printed 01 -22 -2009
Exh. 7- 23A -27 Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge;
50.90 cfs
Depth:
2.79 ft 3.09 ft
Top Width:
11.17 ft 12.37 ft
Velocity:
3.26 fps
X- Section Area:
15.59 sq ft
Hydraulic Radius:
1.249 ft
Froude Number:
0.49
Manning's n:
0.0290
Dmin:
1.00 In
D50:
1.50 In
Dmax:
3.00 in
r:
Fliename: 10 -year Collom_Pond With Riser).sc4 Printed 01 -22 -2009
Exh. 7- 23A -27 Revision Date: 12/15/10
Revision No.: PR -03