2016-10-28_PERMIT FILE - C2010089A ‎(21)‎

• Permit No: C2010089A
• IBM Index Class Name: Permit File
• Doc Date: 10/28/2016
• Doc Name: NHN-001 Ditches As-Built
• Section_Exhibit Name: Appendix 2.05.3‎(4)‎-7
• Media Type: D
• Archive: Yes

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Structure #3 6R1"rap Channel
West Ditch - Segment 3
Triangular Riprap Channel Inputs:
Material: Riprap
Left Right
w/o Freeboard w/ Freeboard
Depth:
0.20 ft 0.50 ft
Top Width:
17.51 ft 20.96 ft
Velocity:
1.95 fps
X -Section Area:
3.28 sq ft
Hydraulic Radius:
0.187 ft
Froude Number:
0.79
Structure #3 6R1"rap Channel
West Ditch - Segment 3
Triangular Riprap Channel Inputs:
Material: Riprap
Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
9.64 cfs
Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
3.9:1 3.9:1 6.5
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
Filename: Pond NHN-001 West Ditch Evaluation.sc4 Printed 04-01-2016
w/o Freeboard w/ Freeboard
Design Discharge:
9.64 cfs
Depth:
0.72 ft 1.02 ft
Top Width:
5.64 ft 7.98 ft
Velocity:
4.72 fps
X -Section Area:
2.04 sq ft
Hydraulic Radius:
0.350 ft
Froude Number:
1.38
Manning's n:
0.0400
Dmin:
2.00 in
D50:
3.00 in
Dmax:
4.50 in
Filename: Pond NHN-001 West Ditch Evaluation.sc4 Printed 04-01-2016