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171 <br />~r~ <br />.i-; <br />o.l <br />.09 <br />.oe <br />.c ~ <br />os <br />_~ .05 <br />0 <br />~ sIp.04 <br />.03 <br />.02 <br />0.01 <br />• <br />PLAIN CIRCUL/~R OUTLETS <br />scour cu~~ies <br />dt = Tailvrater dopth-ft <br />km= Mean Riprap Sizo-tt <br />ds = Deptlt of Scour-ft <br />D <br />~~ <br />/// <br />~% j %% ~ ~ <br />%~ ~ ~ ~ ~ ~ <br />/~/ ~ ~ ' <br />i~ ~ ~ ~~ ~ ~ <br />/ ~ ~ I / ' ~ <br />/ ~~~ ~ ~ ~ <br />' / ~ / ~ ~ <br />~ / ~~/ <br />/ ; ~ ~ <br />~ ~ <br />Adopted from: <br />Simons, D.B., Steven <br />M. A. and Watts, F.~., <br />FLOOD PROTECTION <br />AT CULVERT OUTLETS, <br />/CER69-70DBS -t:tAS <br />FJ1V4, Colo. Stale <br />Univ., Ft. Collins, Colo. <br />q: 170. <br />I.0 2 3 4 5 6 7 B 9 10 i2 14 <br />Q/ 2 5 cfs <br />~ (ft)5/2 <br />Fig. IV-8 <br />5a <br /> <br />I <br />,. ~ ...., .L ~ k <br />w , i 1 ~ ~ <br />o~ <br />A ~ O ~ ~ ~ <br />cV rrj <br />