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COURBONSMETHOD

he distribution of live loa

among the longitudinalgirder can be estimated b

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Cross section-A-A

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culvert

A culvertis a structure that allows waterto ow under a road,railroad, trail, or similar obstruction fromone side to the other side.

Typically embedded so as to be

surrounded by soil, a culvertmay bemade from a pipe, reinforced concrete orother material.

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1.Pipe culvert

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2.Arch culvert

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3.o! culvert

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".#teel girder

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$.%cc slab girder

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xample o R!C! Sla" culvert Desi#n

&iven data'idth of bridge( 12m)o footpath provided

*2$+e"1$lear span -$meight of vent -3./m'earing course thic0ness -$mm asphalt concret

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esign of dec0 slabi4Preliminary dimensions(

ii4#lab thic0ness assumed $$/mmiii45sing 2/mm dia bar 6 clear cover $/ mm

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ead loads

eight per m72 of #lab - thic0ness ! density of concrete - /.$$/ ! 2$ -13.8$ 9)

earing course per m72 of slab -2./ 9):m72otal dead load - 1$.8$ 9):*72

ending moment due to dead load

-$8."/;8$ 9)m

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ending moment due to=% lass AA wheeled vehicle

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