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
c~~~..~..nr roaa-onm a~~.=~~.i c~n,..,n
27
w/o Freeboard w/ Freeboard
X-Section Area: 1.62 sq ft
Hyd2ulic Radius: 0.126 ft
Froude Number*:
Manning's n*:
Dmin: 3.00 in
D60: 9.00 in
Dmax: 11.25 in
Velocity and Manning's n olculations may not apply for this method.
Structure #13 (Null)
SEC. 28 NULL 3
Structure #14 /Rioraa Channel
SEC. 28 DITCH 8
Trapezoidal Riprap Channel Inputs:
Material: Riorao

Bottom Left Right Freeboard Freeboard Freeboard
Width (ft) Sideslope Sideslope Slope (%)
R
ti Mult. x
Depth (R) % of Depth
a
o
Ratio (VxD)
12.00 3.0:1 3.0:1 35.0 1.00
Riprap Channel Results:
Simons/OSM Method -Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 20.33 ds
Depth: 0.04 ft 1.04 ft
Top Width: 12.21 ft 18.21 ft
Velocity*:
X-Section Area: 0.42 sq ft
Hydraulic Radius: 0.035 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: STSec29Ten24.030907.sc4 Printed 03-09-2007
Exh. 7-20A-31 Revision Date: 3/12/07
Revision No.: PR-02