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CULVERT DESI(3d <br />Clil.vert No: C-3 <br />Description: Pipe drain under haulroad <br />Peak Discharge: (6)(1.12)(1.12) = 7.53 <br />Design: <br />5= 15 percent <br />n= .017 roughness coefficient <br />42 p= x D <br />RH= .25 D <br />~(1.49/n) (A) (RH) 2/3 g .5 <br />(p(1.49/n) (.25) (3.14) D2 (.25D) 2/3 5 .S <br />X0.47 D 2.6750.5 <br />• n <br />2.6 4 n <br />D = 0.4750.5 <br />D = 2.67 7.53 (.017) <br />.47 (.15)'5 <br />D = 2.67 .70 <br />D = .87 feet = 10.44 inches <br />• <br />Use.12" CLi1~2xt <br />