A steel bridge expands in summer . What precautions are taken to make sure that this expansion does not damage the bridge
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The precaution taken during the summer is that one end of the bridge is fixed and the other end is kept at a roller to allow the movements due to thermal expansion (expansion due to heat)
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gaps are left Between two consecutive bars
one end is fixed and the other end is placed on rollers
so that due to expansion they don't bend away and get separated
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