2011-06-29_PERMIT FILE - C1981019A ‎(16)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 6/29/2011
• Doc Name: Section 21 Sedimentation Pond
• Section_Exhibit Name: Exhibit 07 Item 20 Part B -ST
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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21
w/o Freeboard w/ Freeboard
Hydraulic Radius: 0.075 ft
Froude Number*:
Manning's n*:
Dmin: 2.00 in
D6D: 6.00 in
Dmax: 7.50 in
Velocity and Manning's n calculations may not apply for this method.
Structure #38 (~eaetated Channell
SEC. 21 COLLECTOR DITCH 6
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome

Left Right
Bottom Retardance Freeboard
Freeboard Freeboard Limidn
9
Width ft) Sideslope Sideslope Slope (%) Classes
( Ratio Ratio a Mull. x
Depth (ft) /o of Depth Velocity
(fps)
(VxD)
12.00 2.0:1 2.0:1 0.5 D, B 1.00 5.0
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: 4.54 cfs 4.54 ds
Depth: 0.48 ft 1.48 ft 1.01 ft 2.01 ft
Top Width: 13.91 ft 17.91 ft 16.06 ft 20.06 ft
Velocity: 0.74 fps 0.32 fps
X-Section Area: 6.18 sq R 14.24 sq ft
Hydraulic Radius: 0.437 ft 0.861 ft
Froude Number: 0.19 0.06
Roughness Coefficient: 0.0825 0.2983
Structure #37 (Vegetated Channel)
SEC. 21 COLLECTOR DITCH S
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome
C~
Filename: STSec21Ten24.030807.sc4
Excl. 7-20B-25
Printed 03-09-2007
Revision Date: 3/12/07
RevisionNo.: PR-02