2017-05-12_PERMIT FILE - C2010089 ‎(20)‎

• Permit No: C2010089
• IBM Index Class Name: Permit File
• Doc Date: 5/12/2017
• Doc Name: NHN-001 Ditches As-Built
• Section_Exhibit Name: Appendix 2.05.3‎(4)‎-7
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
(`nrnirinhf 100A A!1'I fl Pomnh I Cr Mei�h
w/o Freeboard w/ Freeboard
Froude Number: 1.03
Structure #5 (Riprap Channel)
East Ditch - Segment 4
Triangular Riprap Channel Inputs:
Material: Riprao
Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
16.64 cfs
Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
3.3:1 3.0:1 2.4
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
Structure #6 (Erodible Channel)
East Ditch - Segment 5
Trapezoidal Erodible Channel Inputs:
Material: Shales and hardpans
Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
16.64 cfs
Depth:
1.08 ft 1.38 ft
Top Width:
6.82 ft 8.71 ft
Velocity:
4.50 fps
X -Section Area:
3.70 sq ft
Hydraulic Radius:
0.516 ft
Froude Number:
1.08
Manning's n:
0.0330
Dmin:
2.00 in
D50:
3.00 in
Dmax:
4.50 in
Structure #6 (Erodible Channel)
East Ditch - Segment 5
Trapezoidal Erodible Channel Inputs:
Material: Shales and hardpans
Left Right
Freeboard Freeboard Freeboard
Limiting
Sideslope Sideslope Slope (%) Manning's n
Velocity (fps)
Width°(ft)
Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
7.60 3.0:1 4.7:1 0.6 0.0250
0.30
6.0
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 22.68 cfs
VA
Filename: Pond NHN-001 East Ditch Evaluation_02.15.17.sc4 Printed 02-15-2017
Appendix 2.05.3(4)-7 Page 14 February 2017 JR -15)