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II I I I I I I I~ II I III III Doc Date:12/11 /2001 <br />sss 1 <br />uo ID,ooo <br />•~ Isa . •,ooo LO55 COEFFlClEM KQ ~(S <br />a,ooo FOR VARIOUS ENTRANCE f2) <br />IS6 TYPES 6. <br />s,oop (3) <br />- µ4 4,000 tiW ENtRAIdCE <br />-scALE coE>~Elalxr 3• r 6. <br />~~ <br />i~ <br />0 <br />0 <br />N <br />0 <br />m <br />`o <br />lJ <br />`o <br />v <br />c <br />O <br />N <br />I <br /> - 132 D TYPE <br /> 3000 <br /> t1) i4ed.ell p. •dWrw6.d 03 <br /> 120 S•ei•n rn,dw~ninp b RO <br /> C <br />_ 2,000 d•O• <br /> - 10J! ~ m ~'d N cenf•,n b J•p• O7 <br /> e C7 hejw:q fran fIIl 0.9 3- <br /> 96 ~ 1,000 <br /> N ){00 Ta vr,eel• f27 w f77 D„1•,t <br /> e4 600 hO~QnnioOl'b,eob n7. th.• <br />w »re70h1 ind'uvd r.,,. thrwgh <br />2. <br /> SOO D end O x•IH, w r•.•rv •s <br /> 400 ~°ffi°~ <br /> 72 <br /> <br /> 300 <br /> 3 Ls <br />c 00 ,n 200 = <br />..., u` <br /> 34 p <br />v u <br />~ <br />e 100 ~ <br />? e~~ ? so 0 <br />f _ t 60- -~ ~~S~Y=I( C <br /> 1 <br />0 <br />~ 42 " SO ~ o. = <br />• <br />o ~ 40 EXAMPLE ~_ <br />e 3s 3p Diam.(D1• 8ilr.''47~~~J u <br />o r-- O'70tt3/s~o 3 <br /> 33 - __________ -a <br /> _ <br /> 30 ~- <br /> <br /> n> lA a.0h <br /> 27 l0 O) l A a.0 <br /> s. 7 7.1 4.4 0.7 <br /> 24 <br />6. <br />3. <br />4. <br />4. <br />3. <br />2. 2. <br /> <br />LS LS ' <br /> <br />I.0 <br /> 1.0 <br />.9 <br /> 0.9 <br />0.8 <br /> 0.8 <br /> <br />0.7 <br /> 0.7 <br />S <br />L I .{ 0.6 <br />0.6 <br />3 0.6 <br />1 <br />IS O.S <br />t.o 0.3 <br />HEADWATER DEPTH FOR <br />12 [ORRUGATED STEEL PIPE CULVERTS <br />WITH INLET CONTROL <br />FliWA HEC 5 ~~ ~ C 110 <br />Flquro 428 Inlet control nomograph for corrugated steel pipe culverts. The manu- <br />facturers recommended keeping NW/D to a maximum of 1.5 and preferably to no <br />more than 1.0. <br /> <br />