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General Culvert Desi ans <br />Design Requirements: <br />Flow = 40.0 cfs <br />HW /D = 1.0 <br />Projecting from fill <br />D = 42 inches <br />Revenue Mine August 2012 6-11 <br />leo <br />10,000 <br />6,000 <br />LOSS COEFFICIENT Ke <br />166 <br />FOR VARIOUS ENTRANCE <br />i2) <br />156 <br />6,000 <br />TYPES <br />5,000 <br />(3) <br />- 144 <br />4,000 <br />HW ENTRANCE <br />6. <br />SCAIE COEFFICIENT <br />D TYPE <br />L- <br />132 <br />3,000 <br />5. <br />6. <br />(1) Headwall, sq. edge; or End 0.5 <br />-120 <br />Section conforming to fill <br />5. <br />p <br />2,000 <br />slope <br />4, <br />108 <br />n- <br />(2) Mitered to conform to slope 0.7 <br />0 <br />(3) Projecting from fill 0.9 3. <br />4. <br />- 96 <br />1,000 <br />3. <br />_ <br />in <br />800 <br />- <br />To use scale (2) or (3) project <br />3. <br />84 <br />600 <br />horizontally to scale (1), then <br />2• <br />_ <br />500 <br />use straight inclined line through <br />D and Q scales, or reverse as <br />400 <br />illustrated. <br />2' <br />- 2. <br />72 <br />3Q0 <br />p <br />- <br />\ 1.5 <br />C <br />60 <br />200 <br />= <br />1.5 <br />1.5 <br />42 <br />inch <br />culvert v <br />- 54 <br />a <br />- <br />100 <br />0 <br />m <br />8 <br />CD <br />80 <br />> <br />- o <br />zAAtiLE <br />601 <br />V <br />42 <br />50 <br />1.0 <br />'" 0 - <br />I.0 <br />- - <br />- <br />40 <br />EXAMPLE <br />- <br />,9 <br />-1.0 <br />E <br />36 <br />30 <br />Diam.(D)- 48 in. m4A O <br />Q =70 cfs <br />0 <br />33 <br />20 <br />- - - - - -- a 8 <br />8 <br />Scale HW HW 2 <br />30 <br />-D-'T- <br />(1) 1.0 4.0 Et. <br />N <br />27 <br />L 10 <br />(2) 1.0 4.0 <br />- <br />(3) 1.1 4.4 .7 <br />,7 <br />6 <br />m <br />24 <br />.7 <br />6 <br />t <br />5 <br />U <br />-2 <br />21 <br />4 <br />- <br />.6 <br />.6 <br />- <br />- 3 <br />.6 <br />C <br />O <br />IB <br />in <br />2 <br />15 <br />,5 <br />1.0 <br />.5 <br />HEADWATER DEPTH FOR <br />12 <br />CORRUGATED STEEL PIPE CULVERTS <br />WITH INLET CONTROL <br />Revenue Mine August 2012 6-11 <br />