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III'IIIIIIIII'II'11 Doc Date:12111/2001 <br /> <br /> Iso I°,°°° <br />t I ~ <br /> Iss . s,ooo LOSS COEFFICIENT KQ <br />• FOR VARIOUS ENTRANCE <br />~~~ <br /> 136 6.000 <br />TYPES 6. <br /> s,oop <br />(3) <br /> ' µ4 4,000 1iV~! ENTRANCE 5, 6. <br />SCALE <br />COEFFlCIEM <br /> - 132 D <br />TYPE <br />3,000 6. <br /> (U )leed.dl q. edw: er 6d 03 <br /> t20 C ~~ ~ mdoreugbfil 5. <br /> 4. <br /> - IOS a. <br />d Q1 M4nd b conreiu b dew 07 . <br />4 <br />3 <br /> . <br />. <br />lA hei.gie0 hes pl 03 <br /> 96 ~ 1,000 3. <br /> in soo 3• <br />Te w rceM (2) or t7) prejett <br /> 64 600 ~en1p0'/ ro seole (11, tMn <br />vae afre:eAr inclined line threegh 2• <br /> 300 D end O Ymle4 er re.ene ea <br /> 400 ileCmhd. <br />2 <br />2- <br /> 72 . <br />. <br /> ~ 300 <br />s, ~ 1.5 <br /> <br />c ~ ~ 200 = 1.5 I.5 <br />O <br /> S4 O E <br />" <br />e. 100 p <br />V 6~~ `v EO Cl <br /> ~ <br />~ ~ -~ G 4.0 1.0 <br /> 42 •• SO <br />a ~ 4D EXAMPLE C 1.0 <br />e <br />•~ 30 DiOm.(D)•48in.•4}t o <br />O 36 0. 70 ft3/see ~ 0.9 <br /> 33 ___________ <br />20 ~ 0.8 0.8 <br /> Stele )Iw = <br /> <br />° 30 3- <br />0.8 <br />u p) 1 a.O h <br />~ 27 10 (Z) 1.0 4-0 <br /> <br />~ 0.7 0.7 <br />rJI 1.) ~.a <br />D <br />°m 24 0.7 <br /> 6 <br />O S <br />~ 2f 4 O.6 0.6 <br />O <br />v 3 0.6 <br />o` la <br />in <br />I 2 <br /> IS 0.3 <br /> I.0 0.5 <br /> HEADWATER DEPTH FOR <br /> t2 CORRUGATED STEEL PIPE CULVERTS <br /> WiTN INLET CONTROL <br />FHWA HE ~ C 109 <br /> ~ <br />Flpuro 428 /nlel conOrol nomograph for cortugated steel pipe culverts. The manu- <br />facturers recommended keeping HW1D to a maximum of 1.5 and preferably to no <br />more than 1.D. <br />