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![[Post New]](/templates/default/images/icon_minipost_new.gif) 19 Feb 2008 11:15:01 IST
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The magnitude of the downward displacement produced due to the excessive use of bridges or culvert:
 =W*l3/4*Y*b*d3
where l is the length of the bridge
Y is the Young's modulus
b is the breath
d is the depth.
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Be not afraid of growing slowly.
Be afraid only of standing still.
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