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MR -418 Calculations <br />Structure: C5E-3 - 24" HDPE - #17 <br />Mannings Coefficient (n) 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 />0.05 <br />Maximum Flow (cfs) <br />31.56 <br />Design Discharge (cfs) <br />21.6 <br />Combined Flow <br />24.35 <br />(C5E-3 Design Flow + C5E-25 Design Flow) <br />24.35 <br />Maximum Flow > Combined Flow? <br />Yes <br />Structure: C5E-2 - 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 />21.6 <br />Combined Flow <br />24.35 <br />(C5E-3100 Year + C5E-25 Design Flow) <br />Maximum Flow > Combined Flow? <br />Yes <br />5 of 5 <br />8/23/2016 <br />