Civil Engineering
Bridges and Tunnels

Why do steal bridges have gaps on them?


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2009-03-05 19:42:03
2009-03-05 19:42:03

The gaps allow the steal to expand as the day gets hotter, and prevent the steal from buckling.

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to accomodate expansion, and contraction

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When heat from the sun hits the bridge it needs room to expand otherwise it would crack and fall apart.

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To allow them to expand and contract with heat and cold. Without those, the road would end up buckling.

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Steal, Timber, Concrete, Stone (natural and artificial) Tough it depends on the bridge's location, the forces working on it, suspension, weather and the load it would need to carry.

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