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- II I IIIIII IIIIIII III Doc Date:12/11/2001 <br />•~ <br />i~ <br />uo <br />Isa <br />IS6 <br />- 144 <br />- 132 <br />120 e <br />_o <br />- IOa ~ <br />O <br />96 ~ <br />N <br />a1 <br />72 <br />c ~ <br />D <br />~ 54 <br />v a-~ <br />0 42 <br />r <br />0 <br />0 36 <br />0 <br />i3 <br />30 <br />0 <br />u <br />N <br />Y <br />m 24 <br />2 <br />`o <br />U 2) <br />v <br />0 <br />v <br />c tt <br />p <br />N <br />IS <br />tz <br />- lo,ooo <br />s,ooo 1055 COEFF)CIENT KQ tll <br />- s,ooo FOR Y/Ut10US ENTRANCE 1~~ <br />- s,oop TYPES 6. <br />- 4,000 FiW ENTRANCE 5. 6. 13) <br />U SCAIE TAE COEfRCIENr <br />- 3,000 6. <br />(1) /Mnd.e(l r0• edpy ar End 0.3 <br />- 2,000 ~ oYdenni~q a fil 4 S. <br />_ fb MiMnd ti teniorn a Jape a7 <br />q) -rei••I~ro fn~n pl as 3. a. <br /> t,oo0 3. <br /> i00 3• <br /> Te u+e rcole (2) or q) DreNC1 <br /> 600 ~a11°Rr to rcole (1), then <br />' <br />Z <br /> yr ore~9hr ind <br />•.ed rw Iheauph • <br /> SOO D and O Ysteti, or re~nrr os <br /> 400 ilutllered. <br />2 <br /> . 2. <br /> 300 <br />~ <br />0 3 I.s <br /> <br />A 200 = I <br />S - <br /> • I.S <br /> `u <br />O E <br /> 100 p <br />? eo 0 <br />_ <br />~ ~ LO I.0 <br /> 50 ,- a <br />O 40 E7(A/APlE ~ 10 <br /> so <br />Dipm.(D)•48in.•4ft <br />'9 <br /> 0 <br />0• /sec ~ <br />0.9 <br /> 20 ~ <br />w ~~ = 0.8 0.8 <br /> ' H <br /> ~ <br /> 0.8 <br /> (D lA 4.Oh <br /> IO U) 1.0 4.0 <br /> <br />' rn t.l 4.4 0.7 0.7 <br /> s <br /> 0.7 <br /> s <br /> S <br /> 4 0.6 0.6 <br /> 3 0.6 <br /> 2 <br /> <br /> ' O.S <br /> t.0 0.3 <br /> HEADWATER DEPTH FOR <br /> CORRUGATED STEEL PIPE CULYERTS <br /> WITH INLET CONTROL <br />FHWA HEC ~~~ C 111 <br />Flyuro 428 /Met corrfi7l nomograph for corrugated steel pipe culverts. The manu- <br />facturers recommended keeping H1N/D to a ma)cimum of 1.5 and preferably to no <br />more than 1.0. <br />