building collapse due to earthquake
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Buildings collapse in an earthquake because of the vibration of the ground. ... During earthquakes the vibration of ground can cause the liquefied sand and excess water to force its way to the ground surface from several meters below the ground.
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- Earthquakes move the ground side to side and up and down—simultaneously. The force behind this movement is powerful enough to turn soft soil instantly into quicksand, eliminating its ability to bear weight.
- Most of the buildings are not safe enough to resist the vibrations of the earthquakes due to shallow foundation and lack of adequate steel in the interior design.
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