2015-03-09_PERMIT FILE - C2010089A

• Permit No: C2010089A
• IBM Index Class Name: Permit File
• Doc Date: 3/9/2015
• Doc Name: Pond NHN-002 & NHN-002 DItch Designs
• Section_Exhibit Name: Appendix 2.05.3‎(4)‎-8
• Media Type: D
• Archive: Yes

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Structure Detail;
Structure #7 (Erodible Channel)
South Ditch (0 +00 to 7 +75)
Trapezoidal Erodible Channel Inputs:
Material: Excavated overburden (sandstone)
Left Right
Bottom g
Freeboard
Freeboard Freeboard
Limiting
9
Width (ft) Sideslope Sideslope Slope ( %) Manning's n
Mult. x
Velocity
Ratio Ratio
De
Depth (ft) % of Depth (VxD)
(fps)
12.00 2.0:1 2.0:1 5.0 0.0350
1.00
5.0
Erodible Channel Results:
Structure #6 (R /prap Channel)
South Ditch (7 +75 to 11+ 00)
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom
w/o Freeboard w/ Freeboard
Design Discharge:
23.76 cfs
Depth:
0.39 ft 1.39 ft
Top Width:
13.55 ft 17.55 ft
Velocity:
4.81 fps
X- Section Area:
4.94 sq ft
Hydraulic Radius:
0.360 ft
Froude Number:
1.41
Structure #6 (R /prap Channel)
South Ditch (7 +75 to 11+ 00)
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope ( %)
Width (ft)
Mult. x
Depth (ft) % of Depth
Ratio Ratio
(VxD)
12.00 2.0:1 2.0:1 10.0
1.00
Riprap Channel Results:
PADER Method - Steep Slope Design
Filename: Pond NHN -002 10YR EVENT PRINCIPAL SPILLWAY OPEN 23JAN15.sc4 Printed 01 -23 -2015
w/o Freeboard w/ Freeboard
Design Discharge:
23.96 cfs
Depth:
0.38 ft 1.38 ft
Top Width:
13.53 ft 17.53 ft
Velocity:
4.92 fps
Filename: Pond NHN -002 10YR EVENT PRINCIPAL SPILLWAY OPEN 23JAN15.sc4 Printed 01 -23 -2015