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<br /> 180 ~ 10,000 ~ ~ <br />' (I <br />) <br /> - e,ooo LOSS COEFFICIENT Ke • <br /> 168 <br />FOR VARIOUS ENTRANCE <br />' . , <br />.~~) <br /> 156 ~ 6,000 <br />TYPES 6 <br /> _ S,DOp (3) <br />- - I4 4 4 000 HW Eh(TRAhiCE 5. 6• <br /> SCALE TYPE COEFFICIEh(T <br /> - 132 3 000 5,~ 6. <br /> (1) Headwall, sq. edge; or End 0.5 <br /> °.120 m Section <on(ormin9 to (ill 5. <br /> a 2,000 <br />(lope 4. <br /> ~- f2) Mitarcd to conform to slope 0.7 <br /> - 108 ~ (3) Projecting from fYl 0.9 3. 4 <br /> <br /> 96 ~ I,000 3• <br /> in 800 -. '. <br />To use stole (Z) or (3) proje<I 3' <br /> B4 600 horizontally to stole (1), Ih<n <br />2 <br /> me straight inclined line Through . <br /> 500 D and Q s<ol<s, or reven<as <br /> 400 illustrated. <br />2 <br /> <br />72 . 2. <br /> 300 p <br /> \ 1.5 <br /> 3 -- <br /> <br />_c <br />60 V 200 <br />I.5 <br />1.5 <br /> < < v <br /> <br />~ 54 <br />~ v <br /> 100 p <br /> 8~ <br />~ BO ~ <br /> U _ <br />V 60 `HIE ~ <br />r <br />LO <br /> - <br />~ 1 O <br /> ~ 42 Q 50 <br />~ - -- <br /> w ~ <br />40 EXAMPLE I_O <br /> _ - <br />v <br />EE <br />36 v <br />30 6om. (03a <8 ice.=4 (s. o . <br />~ Q=70 ch ~ .g <br />Q 33 -20 ______-_____ ~ <br />-0 . <br />e <br /> Scol< HW HW = <br />v O 8 <br />~! (11 1.0 4.0 (t. <br />`n 27 10 l1) 1.0 4.0 <br />~ <br />°' (3) 1.1 4.4 <br />B •7 .7 <br />0 <br />rn 24 .7 <br /> 6 <br />`O 5 <br />U <br /> 21 <br />4 <br />6 <br />~ . .6 <br />v° 3 .6 <br />~ <br />0 18 <br />in 2 <br /> IS ~ .5 <br /> IO S <br /> HEADWATER DEPTH F OR <br /> 12 CORRUGATED STEE L PIPE C ULVER TS <br /> WITH INLET C ONTR OL <br />C~~3 <br />Fig. 4-18. lnlef control nomograph for corrugated steel pipe culverts. The manufac- <br />turers recommend keeping HW/D to~a maximum of 1.5 and preferably to no more <br />a,e., i ~ <br />