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

SEDCAD 4 for Windows
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Structure Detail;
Structure #1 (R/praP Channel)
West Ditch - Segment 1
Triangular Riprap Channel Inputs:
Material: Riprap
Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
5.10 cfs
Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
3.6:1 3.5:1 2.6
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
Structure #2 (Erodible Channel
West Ditch - Segment 2
Trapezoidal Erodible Channel Inputs:
Material: Shales and hardpans
Bottom Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
5.10 cfs
Depth:
0.65 ft 0.95 ft
Top Width:
4.64 ft 6.77 ft
Velocity:
3.37 fps
X -Section Area:
1.51 sq ft
Hydraulic Radius:
0.314 ft
Froude Number:
1.04
Manning's n:
0.0330
Dmin:
1.00 in
D50:
1.50 in
Dmax:
3.00 in
Structure #2 (Erodible Channel
West Ditch - Segment 2
Trapezoidal Erodible Channel Inputs:
Material: Shales and hardpans
Bottom Left Right
Freeboard Freeboard Freeboard
Limiting
Width (ft) Sideslope Sideslope Slope (%) Manning's n
Velocity (fps)
Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
15.20 8.5:1 3.0:1 1.0 0.0250
0.30
6.0
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 6.39 cfs
6
Filename: Pond NHN-001 West Ditch Evaluation.sc4 Printed 04-01-2016