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

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SEDCAD 4 for Windows
r—mi m loon _'1nn7 0.-1. 1 Q, h—h 34
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Max, Entrance
Tailwater
f Length (ft) Slope (%) Manning's n Headwater Loss Coef.
(ft) (ft) (Ke)
50.00 5.00 0.0240 5.00 0100 0.90
Culvert Results:
Design Discharge = 112.53 cfs
Minimum pipe diameter: 1 - 60 inch pipe(s) required
Structure #16 (R / "rap Channel)
NC4
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Freeboard Freeboard Freeboard
Bo th m Sideslope Sideslope Slope ( %)
Depth (ft) °h of Depth Mult. x
Ratio Ratio
(VxD)
5.00 2.0:1 2.0:1 7.7
0.30
40 Riprap Channel Results:
PADER Method -Steep Slope Design
Structure #15 (R/ "rap Channel)
RD6
Trapezoidal Riprap Channel Inputs:
Material: Riprap
L`
Fllename: 10 -year Collom Pond (With Riser).so4 Printed 01 -22 -2009
Exh. 7- 23A -38 Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge:
112.56 ds
Depth:
1.54 ft 1.84 ft
Top Width:
11.15 ft 12.35 ft
Velocity:
9.06 fps
X-Secdon Area:
12.42 sq ft
Hydraulic Radius:
1.046 ft
Froude Number:
1.51
Manning's n:
0.0470
Dmin:
5.00 in
D50:
9.001n
Dmax:
12.00 in
Structure #15 (R/ "rap Channel)
RD6
Trapezoidal Riprap Channel Inputs:
Material: Riprap
L`
Fllename: 10 -year Collom Pond (With Riser).so4 Printed 01 -22 -2009
Exh. 7- 23A -38 Revision Date: 12/15/10
Revision No.: PR -03