PERMFILE110281

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 5/4/2007
• Doc Name: Section 28 Sedimentation Pond
• Section_Exhibit Name: Exhibit 07 Item 20 Part A -ST
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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13
w/o Freeboard w/ Freeboard
Design Dixharge: 4.22 cfs
Depth: 0.03 R 1.03 ft
Top Wid[h: 12.16 ft 18.16 R
Velocity*:
X-Section Area: 0.32 sq ft
Hydraulic Radius: 0.027 ft
Froude Number*:
Manning's n*:
Dmin: 2.00 in
D60: 6.00 in
Dmax: 7.50 in
Velocity and Manning's n calculations may not apply for this method.
Structure #17 (Riprap Channel)
SEC. 28 DITCH 10
Trapezoidal Riprap Channel Inputs:
Material: Riorao
•
Left
Bottom Right Freeboartl Freeboard Freeboard
Sideslope
Width (R) Sideslope Slope (%) Mult. x
Depth (ft) %of Depth
Ratio Ratlo (VxD)
12.00 3.0:1 3.0:1 30.0 1.00
Riprap Channel Results:
Simons/OSM Method -Steep Slope Design
w/o Freeboard w/ Freeboard
Design Dixharge: 8.18 cfs
Depth: 0,02 ft 1.02 R
Top Width: 12.13 ft 18.13 ft
Velocity*:
X-Section Area: 0.26 sq ft
Hydraulic Radius: 0.022 ft
Froude Number*:
Manning's n*:
Dmin: 3.00 in
D50: 9,00 in
Dmax: 11,25 in
Velocity and Manning's n calculations may not apply for this method.

Filename: STSec28Ten24.030807.sc4 Printed 03-09-2007
Exh. 7-20A-17 Revision Date: 3/12/07
Revision No.: PR-02