courbon method
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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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