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NIR -418 Calculations <br />Structure: C5E-6 - 24" HDPE - Stand Alone #1 <br />Manning's Coefficient (n) <br />0.012 <br />Inside Diameter (in) <br />19.5 <br />Radius (in) <br />9.75 <br />Area (ft) <br />2.07 <br />Hydraulic Radius (ft.) <br />0.41 <br />Slope (ft./ft.) <br />0.03 <br />Maximum Flow (cfs) <br />24.45 <br />Design Discharge (cfs) <br />15.95 <br />Combined Flow <br />0.52 <br />Slope (ft./ft.) <br />18.70 <br />(C5E-6 Design Flow + C5E-25 Design Flow) <br />44.88 <br />Maximum Flow > Combined Flow? <br />Yes <br />Structure: D5E-3 - #4 <br />w/ Freeboard <br />3 of 5 8/23/2016 <br />(ft.) <br />Manning's Coefficient (n) <br />0.017 <br />Top Width (T) <br />4.68 <br />Bottom Width (b) <br />0.00 <br />Depth (h) <br />1.17 <br />z (ft.) <br />2.00 <br />Area (ft) <br />2.74 <br />Wetted Perimeter (ft.) <br />5.23 <br />Hydraulic Radius (ft.) <br />0.52 <br />Slope (ft./ft.) <br />0.083 <br />Maximum Flow (cfs) <br />44.88 <br />Design Discharge (cfs) <br />20.34 <br />Combined Flow <br />23.09 <br />(D5E-3 Design Flow + C5E-25 Design Flow) <br />Maximum Flow > Combined Flow? <br />Yes <br />3 of 5 8/23/2016 <br />