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
r,...,m,.~., moa .om~ o~..,vi~ i em,.~n
7
Structure Detai/;
Structure #21 (tegetated Channel)
SEC. 28 DITCH 13
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome
Left Right
Bottom Retardance Freeboard Freeboard Freeboard Limiting
Bideslope Sideslope Slope (%)
Classes
Width (R) R
i Mull. x
Depth (R) %of Depth Velocity
f
at
o Ratio (VxD) ps)
(
15.00 3.0:1 3.0:1 25.0 D, B 1.00 3.0
Vegetated Channel Results:
•
Stability
Class D w/o
Freeboard Stability
Class D w/
Freeboard Capacity
Class B w/o
Freeboard Capacity
Class B w/
Freeboard
Design Discharge: 7.40 cis 7.40 ds
Depth: 0.16 R 1.16 R 0.32 R 1.32 R
Top Width: 15.98 ft 21.98 R 16.94 ft 22.94 R
Velocity: 2.93 fps 1.43 fps
X-Section Area: 2.52 sq R 5.17 sq R
Hydraulic Radius: 0.157 ft 0.304 ft
Froude Number: 1.30 0.46
Roughness Coefficient: 0.0738 0.2345
Structure #IS (Riprao Channel)
SEC. 28 DITCH 11
Trapezoidal Riprap Channel Inputs:
Material: RIDraD
Bottom LeR Right Freeboard Freeboard Freeboard
Width R Sideslope Sideslope Slope (°/)
ti
() R
i
R o Mult. x
Depth (ft) /o of Depth
at
o
a
o (VxD)
12.00 3.0:1 3.0:1 25.0 1.00
Riprap Channel Results:
Simons/OSM Method -Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 10.36 cfs
Depth: 0.06 R 1.06 R

Filename: STSec28HUntlretl24.010807.sc4
Exh. 7-20A-5 ]
Pdntetl Oi-OB-2007
Revision Date: 1/05/07
Revison No.: PR-02