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 |
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.
Why do bridges have expansion joints? a. They would buckle and crack otherwise. b. for ease...
The bridges often have expansion joints to account for the changes in size due to temperature changes. Suppose a bridge is supported by steel girders; the central span has a girder that is 30 m long.If the girder warms from 0∘C to 28 ∘C, by how much does its length increase? Please include units.
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