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• C[3LUEi7S DFSI(3d <br />Culvert No: C-5 (Bridge 7' wide by 7.5' high) <br />Description: Bridge under county road <br />Peak Discharge: 330 cfs <br />Design: <br />5 percent <br />n= .017 roughness coefficient <br />p~ D2 F~ x D <br />4 <br />1~ .25 D <br />~(1.49/n) (A) (RH) 2/3 5 .5 <br />~(1.49/n) (.25) (3.14) D2 (.25D) 2/3 5 •5 <br />X0.47 D 2.6750.5 <br />n <br />2.6 4 n <br />D = 0.4750.5 <br />Normal peak flow 330 cfs plus additional peak flow fran Ditch <br />15-D4 of 70 cfs. The bridge at C-5 has approximately 300 percent <br />excess capacity. <br />u <br />