2017-05-12_PERMIT FILE - C2010089A ‎(17)‎

• Permit No: C2010089A
• IBM Index Class Name: Permit File
• Doc Date: 5/12/2017
• Doc Name: Pond NHN-002 & NHN-002 DItch Designs
• Section_Exhibit Name: Appendix 2.05.3‎(4)‎-8
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
r'--inhr 100R -9010 P-1. 1 Gh,.mh
Structure #5 (Erodible Channel)
North Ditch (0+00 to 9+00)
Trapezoidal Erodible Channel Inputs:
Material: Excavated overburden (sandstone)
Bottom Left Right
w/o Freeboard w/ Freeboard
Froude Number:
1.41
Manning's n:
0.0440
Dmin:
1.00 in
D50:
1.50 in
Dmax:
3.00 in
Structure #5 (Erodible Channel)
North Ditch (0+00 to 9+00)
Trapezoidal Erodible Channel Inputs:
Material: Excavated overburden (sandstone)
Bottom Left Right
Freeboard Freeboard Freeboard
Limiting
Width (ft) Sideslope Sideslope Slope (%) Manning's n
Depth:
Velocity (fps)
Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
De
Velocity:
12.00 2.0:1 2.0:1 5.0 0.0350
1.00
5.0
Erodible Channel Results:
Structure #4 (Erodible Channel)
North Ditch (9+00 to 30+30)
Trapezoidal Erodible Channel Inputs:
Material: Excavated overburden (sandstone)
Bottom Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
8.53 cfs
Depth:
0.21 ft 1.21 ft
Top Width:
12.84 ft 16.84 ft
Velocity:
3.27 fps
X -Section Area:
2.61 sq ft
Hydraulic Radius:
0.201 ft
Froude Number:
1.28
Structure #4 (Erodible Channel)
North Ditch (9+00 to 30+30)
Trapezoidal Erodible Channel Inputs:
Material: Excavated overburden (sandstone)
Bottom Left Right
Freeboard Freeboard Freeboard
Limiting
Width (ft) Sideslope Sideslope Slope (%) Manning's n
Depth (ft) % of Depth Mult. x (VxD)
Velocity (fps)
Ratio Ratio
12.00 2.0:1 2.0:1 4.0 0.0350
1.00
5.0
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 19.72 cfs
Depth: 0.37 ft 1.37 ft
Filename: Pond NHN-002 DESIGN 10YR EVENT 02.15.17.sc4
Appendix 2.05.3(4)-8
Page 12
i✓
Printed 02-15-2017
February 2017 (TR -15)