The Leaning Tower of Pisa

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piazza dei miracoli view in pisa

The Leaning Tower of Pisa is a marvellous piece of architecture located in Italy. What is unique about this building is that it has a bent of four degrees from its foundation. The tower is about 186 feet high. It is famous all over the world for its bending.


Even after surviving four powerful earthquakes from 1280 till now, this tower stands firmly. In this story, we will tell you why the earthquakes did not cause any damage to the tower.
Because of the bent of four degrees, there has always been a fear of serious harm. To know the secret of how the tower stands firmly, a team of 16 engineers studied seismic, geotechnical, and structural information available on it.


A research group started studying it after a powerful earthquake shook the city. They found that the soil underneath to be the reason for its firm foundation. Engineers found that this soil affected the activity in the tower due to the activity under the ground. This is what scientists call dynamic coil-structure interaction.


The tower’s height and stiffness, and the softness of the soil poured into the base, do not move when an earthquake occurs. Due to this soil, this tower stands strong even after suffering the tremors of powerful earthquakes.


However, in 1990, when the tower was about to fall, a team was formed to monitor it. This team worked on its restoration for many years and succeeded in straightening the tower to some extent. According to reports, they straightened the tower for 1.5 inches or 4 cm.

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