2018-07-24_PERMIT FILE - C2010089 ‎(6)‎

• Permit No: C2010089
• IBM Index Class Name: Permit File
• Doc Date: 7/24/2018
• Doc Name: Pond NHN-001 East Ditch Extension Design
• Section_Exhibit Name: Appendix 2.05.3‎(4)‎-11
• Media Type: D
• Archive: No

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Structure Detail;
Structure #1 (Erodible Channel
East Ditch Segment 1
Trapezoidal Erodible Channel Inputs:
Material: Alluvial silts colloidal
Bottom Left Right
Freeboard Freeboard Freeboard
Limiting
Width (ft) Sideslope Sideslope Slope (%) Manning's n
o
Velocity (fps)
Ratio Ratio
Depth (ft) /o of Depth Mult. x (VxD)
Velocity:
6.00 3.0:1 2.0:1 1.8 0.0250
1.00
3.8
Erodible Channel Results:
Structure #2 (Erodible Channe/�
East Ditch Segment 2
Trapezoidal Erodible Channel Inputs:
Material: Alluvial silts colloidal
Bottom Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
1.48 cfs
Depth:
0.12 ft 1.12 ft
Top Width:
6.62 ft 11.62 ft
Velocity:
1.91 fps
X -Section Area:
0.78 sq ft
Hydraulic Radius:
0.116 ft
Froude Number:
0.98
Structure #2 (Erodible Channe/�
East Ditch Segment 2
Trapezoidal Erodible Channel Inputs:
Material: Alluvial silts colloidal
Bottom Left Right
Freeboard Freeboard Freeboard
Limiting
Width (ft) Sideslope Sideslope Slope (%) Manning's n
o
Velocity (fps)
Ratio Ratio
Depth (ft) /o of Depth Mult. x (VxD)
Velocity:
6.00 3.0:1 2.0:1 0.8 0.0250
1.00
3.8
Erodible Channel Results:
Filename: Appendix 2.05.3(4)-11 Pond NHN-001 East Ditch Extension.sc4 Printed 05-18-2018
Appendix 2.05.3(4)-11 Page 9 June 2018 JR -17)
w/o Freeboard w/ Freeboard
Design Discharge:
3.43 cfs
Depth:
0.26 ft 1.26 ft
Top Width:
7.29 ft 12.29 ft
Velocity:
2.01 fps
X -Section Area:
1.71 sq ft
Hydraulic Radius:
0.231 ft
Froude Number:
0.73
Filename: Appendix 2.05.3(4)-11 Pond NHN-001 East Ditch Extension.sc4 Printed 05-18-2018
Appendix 2.05.3(4)-11 Page 9 June 2018 JR -17)