_PERMIT FILE - C1980007A

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Name: MISCELLANEOUS DRAINAGE
• Section_Exhibit Name: Exhibit 66 Miscellaneous Drainage
• Media Type: D
• Archive: Yes

NIR-418 Calculations
Structure: C5E-6-24"HDPE-Stand Alone#1
Manning's Coefficient(n) 0.012
Inside Diameter(in) 19.5
Radius(in) 9.75
Area(ft) 2.07
Hydraulic Radius(ft.) 0.41
Slope(ft./ft.) 0.03
Maximum Flow(cfs) 24.45
Design Discharge(cfs) 15.95
Combined Flow 18.70
(C5E-6 Design Flow+C5E-25 Design Flow)
Maximum Flow>Combined Flow? Yes
Structure: D5E-3-#4
w/Freeboard
(ft.)
Manning's Coefficient(n) 0.017
Top Width(T) 4.68
Bottom Width(b) 0.00
Depth(h) 1.17
z(ft.) 2.00
Area(ft) 2.74
Wetted Perimeter(ft.) 5.23
Hydraulic Radius(ft.) 0.52
Slope(ft./ft.) 0.083
Maximum Flow(cfs) 44.88
Design Discharge(cfs) 20.34
Combined Flow 23.09
(D5E-3 Design Flow+C5E-25 Design Flow)
Maximum Flow>Combined Flow? Yes
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