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II -70 <br />180 <br />10,000 <br />168 <br />8,000 EXAMPLE <br />156 <br />6,000 0.36 inches (3.0 feel) <br />6• <br />5,000 0.66 cfs <br />(3) <br />144 <br />4,000 Hwe HW <br />5. <br />6. <br />132 <br />3,000 0 Ifeet) <br />5, 6. <br />(1) 1.8 5.4 <br />1205' <br />F <br />2,000 (2) 2.1 6.3 <br />4. <br />108 <br />a <br />(3) 2.2 6.6 <br />J <br />e0 in feet <br />— <br />96 <br />~ <br />1,000 <br />3, <br />3. <br />800 <br />a <br />84 <br />v~i <br />600 <br />2. <br />500 <br />400 <br />�s <br />/ <br />_ <br />2 2 <br />N <br />w <br />72 <br />/ o <br />300 <br />2 <br />60 <br />z 200 <br />w <br />1.5 1.5 <br />z <br />/P'6� <br />UJ <br />0 <br />54 <br />a <br />w <br />t- <br />UJ <br />48 <br />w 100 / <br />a <br />o <br />80� <br />a <br />z <br />—J <br />= <br />u 60 <br />_ <br />1.0 <br />1.0 <br />o <br />42 <br />/ <br />N <br />0 40 <br />t- <br />p <br />1.0 <br />It w36 <br />30 HW ENTRANCE <br />SCALE TYPE <br />X <br />U) <br />D <br />tw- <br />,9 <br />Q <br />33a <br />20 ( Headwall <br />p .6 <br />,8 <br />O <br />30 <br />(2) Mitered to conform <br />Q <br />w <br />to slope <br />S <br />'® <br />ti <br />27 <br />(3) Projecting <br />•7 <br />.7 <br />a <br />a <br />24. <br />8 <br />6 <br />.7 <br />m <br />5 To use seole (2) or (3) project <br />21 <br />4 horizontally to scale (1), then <br />•6 <br />use straight inclined lino through <br />'6 <br />3 o and o stales, or reverse as <br />•6 <br />18 <br />illustrated. <br />2 <br />15 <br />5 <br />1.0 <br />.5 <br />- <br />12 <br />HEADWATER DEPTH FOR <br />C. M. <br />PIPE CULVERTS <br />WITH <br />INLET <br />CONTROL <br />BUREAU OF <br />PUBLIC ROADS JAN, <br />1963 <br />