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

•
SEDCAD 4 for Windows
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Structure #3 (Riprap Channel)
lower portion of e taylor ditch
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
o(ft)
Stability
Class D w/o
Freeboard
Stability
Class D w/
Freeboard
Capacity
Class B w/o
Freeboard
Capacity
Class B w/
Freeboard
Design Discharge:
146.03 cfs
1.00
146.03 cfs
Depth:
1.18 ft
2.18 ft
1.71 ft
2.71 ft
Top Width:
27.09 ft
33.09 ft
30.23 ft
36.23 ft
Velocity:
5.25 fps
Dmax:
3.41 fps
X- Section Area:
27.80 sq ft
42.82 sq ft
Hydraulic Radius:
1.012 ft
1.391 ft
Froude Number:
0.91
0.50
Roughness Coefficient:
0.0350
0.0666
Structure #3 (Riprap Channel)
lower portion of e taylor ditch
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
o(ft)
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope ( %)
Width
Depth (ft) % of Dept Mult. x
Ratio Ratio
(VxD)
12.00 3.0:1 3.0:1 22.0
1.00
Riprap Channel Results:
Simons /OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Structure #16 (Null1
19
Filename: taylor trib ditchl0024.sc4 Printed 12 -12 -2010
Exh. 7- 14C -24 Revision Date: 12/31/10
Revision No.: TR -81
w/o Freeboard w/ Freeboard
Design Discharge:
166.41 cfs
Depth:
0.63 ft 1.63 ft
Top Width:
15.78 ft 21.78 ft
Velocity*:
X- Section Area:
8.75 sq ft
Hydraulic Radius:
0.548 ft
Froude Number *:
Manning's n *:
Dmin:
7.00 in
D50:
21.00 in
Dmax:
26.25 in
Velocity and Manning's n calculations may not apply for this method.
Structure #16 (Null1
19
Filename: taylor trib ditchl0024.sc4 Printed 12 -12 -2010
Exh. 7- 14C -24 Revision Date: 12/31/10
Revision No.: TR -81