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<br /> <br />x <br />r7~ . <br />7 -. <br />Ir J. <br />" so. ~ ~~ <br />i •' /~' L <br />~(+~ 2 ~I~la; ~~'~ <br />. Ica bt~ ' 2t Zt <br />!~ <br />rooo <br />600 <br />]00 <br />+00 <br />Pipe <br />soo <br />200 12 <br />b6 <br />60 <br />LL ]• <br />V X00 <br />5 •e <br />O eo r <br />C '+2 <br />u 60 c <br />rn <br />t ]0 0 ]6 <br />.o - ,~._ <br />.~... o <br />f- - z i/ 6 <br />a <br />xo x~' <br />21 <br />rp ie <br />e <br />6 ie <br />s <br />ie <br />2 <br />Fig. 422. Ouflef Cantrel. <br />let antl Culvert /lowing ful <br />4. HYDRAULICS <br /> s <br />Fler.e ~ <br />, <br /> i~ .~'.r <br /> <br />-- s <br />sar+ sr- .6 <br />su+.[+uo omit/ cu[rur nyrnvc rvu <br /> <br />n, .~ s..n.., s. • w <br />o ~ .e <br />..rw <br />_...r.. ,w r..~s+ n...m <br /> le <br />~Aj~i. r~ o i <br />~/'~ ~ Qe le <br />pa ~ 09~ - 2 <br />V <br />i <br />T -_ <br />~°- <br />n <br />/ o i = S <br />~ 2S ~ a <br />~ O~ e <br />2 = <br />/ ~ / 2p0 S <br />/ 0 <br />EXAM~tF ~ ~ ~~ ~ N~b.O 6 <br />- - - !oe' <br />e <br />'°° to <br />EXAMetE A00 <br />Diem. ~ x~ in. ]Oo <br />O~]S <l. Sp0 <br />L_xw n. <br />r_xso. o.u_no n. <br />x,_o.x] zo <br />----------------- <br />n+d n- d;o n. <br />HEAD FOR STANDARD CORRUGATED <br />STEEL PIPE CULVERTS <br />FLOWING FULL-OUTLET CONTROL <br />n = 0.024 <br />iee0 for corrug6tatl steel pipe culvert with submergetl out- <br />I. See note untler sketch at top. <br />Length Adjustment for Improved Hydraulics <br />Pipe Roughness Factor Length Adjustment Factor <br />Diameter n' " 2 <br />/ <br />) <br />in Inches for Helical Corr.' n <br />12 .Olt .21 <br />24 .016 I .44 <br />36 .019 .61 <br />48 .020 .70 <br />'Other valuesof roughness, n, are apDlirable to paved pipe, lined Oipe and Dipe with 3 x 1 in. corru- <br />gatipns. See Table 4-10. To use the above chart tar these types of Dipe and Dipe-arches, use <br />"adjusted length factors" computed per equation 14, page 160. <br />