Question

Q. Give reason:

1. Buildings collapse due to earthquake.


pls 145 tum answer do na .........​

Answer 1

Answer:

Most collapses that occur during earthquakes aren't caused by the earthquake itself. Instead, when the ground moves beneath a building, it displaces the foundation and lower levels, sending shock waves through the rest of the structure and causing it to vibrate back and forth.

Answer 2

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Based on the design of construction, every building has a resistance to impending shock and vibration . Whenever, the PPV generated by a shock or vibration exceeds this design limits the building develops crack. This is true for man made vibration generated by Construction or production blasts which normally releases P waves with predominant energy.