2011-06-29_PERMIT FILE - C1981019A ‎(17)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 6/29/2011
• Doc Name: West Pit Ditch & Taylor Tributary Ditch Channel Designs ‎(Permanent)‎
• Section_Exhibit Name: Exhibit 07 Item 14 Appendix Exh7-14C
• Media Type: D
• Archive: Yes

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upper portion of e taylor ditch
18
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right Freeboard Freeboard Freeboard
Width
Riprap Channel Results:
Simons /OSM Method - Steep Slope Design
w/o Freeboard w/ Freeboard
Bottom
Sideslope Sideslope Slope ( %)
Mult. x
(ft)
Ratio Ratio
Depth (ft) % of Depth (VxD)
12.00 3.0:1 3.0:1 8.3
1.00
Riprap Channel Results:
Simons /OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Structure #2 ( VeOetated Channel)
middle portion of e taylor ditch
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome
Left Right R nce
Bottom
w/o Freeboard w/ Freeboard
Design Discharge:
102.91 cfs
Depth:
0.71 ft 1.71 ft
Top Width:
16.25 ft 22.25 ft
Velocity*:
20.00 3.0:1 3.0:1 1.5 D, B
X- Section Area:
10.01 sq ft
Hydraulic Radius:
0.607 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.
Structure #2 ( VeOetated Channel)
middle portion of e taylor ditch
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome
Left Right R nce
Bottom
Freeboard Freeboard Freeboard
Limiting
Velocity
Sideslope Sideslope Slope ( %) Class
Width (ft) Classes
Mult. x
Depth (ft) % of Depth
(fps)
Ratio Ratio
(VxD)
20.00 3.0:1 3.0:1 1.5 D, B
1.00
7.0
Vegetated Channel Results:
Filename: taylor trib ditchl0024.sc4 Printed 12 -12 -2010
Exh. 7- 14C -23 Revision Date: 12/31/10
Revision No.: TR -81