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Why do bridges have expansion joints? a. They would buckle and crack otherwise. b. for ease...

Why do bridges have expansion joints?

a.

They would buckle and crack otherwise.

b.

for ease in construction

c.

to absorb vibrations due to traffic

d.

to let water run off

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Answer #1

Correct option will be (a). Because during summer the materials undergo expansion, if expansion joints are not there then the bridge may undergo buckle or crack. Hence to compensate for this, expansion joints are left during construction of the bridge.

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