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Bridges are declared unsafe after long uses because of 

Option: 1

Elastic limit 


Option: 2

Elastic fatigue 


Option: 3

Ductility 


Option: 4

Elastic hysteresis 


Answers (1)

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As we have learned

Elastic fatigue -

The temporary loss of elastic properties is due to the action of the repeated deforming force.

Due to the continuous use of bridges, they are under alternate stress which causes elastic fatigues in steel. Therefore bridges are declared unsafe after prolonged use 

 

Posted by

Suraj Bhandari

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