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Pisa Cathedral Bell Tower
The Leaning Tower of Pisa in Italy is one of the most famous oblique buildings in the world, and has been designed as a cathedral bell tower, with the aim of attracting people to the cathedral located in the miracle square in the italyn city of Pisa, and the tower is characterized by a cylindrical white stone object surrounded With open galleries bordered by columns, with a bell at the top of the building. It was designed in the Romen style between 1173 and 1370 meters, and its height is about 58.36 meters, while its diameter is about 19.58 meters, and the width of the central opening is about 4.5 meters, and was designed by engineers The Austrians Bonano Pisano and Jules Mo.
Stages of building the Leaning Tower of Pisa
The construction of the Pisa Tower started as the third and final building of the cathedral complex in the city of Pisa in the year 1173 AD, and white marble was used in its construction, and after the completion of the construction of three of the eight floors, the construction became unstable, due to its construction on a land with soft soil, Construction was interrupted for several centuries by the war that broke out between italyn cities, which allowed the tower to settle and prevent its early collapse.
After that, the engineer responsible for the resumption of construction, Giovanni dei Simone sought to equalize the slope by constructing the upper floors in the shorter part of the building, but this exacerbated the problem and increased the tilt of the tower, and then stopped the construction of the tower for more than once, as the engineers sought to solve The problem of inclination, and construction was completed in the fourteenth century AD.
The seven bells were installed on the tower during the following four centuries, the largest of which weighed 3,600 kg, but by the early twentieth century the heaviest bells were stopped because they exacerbated the problem of the tilt of the tower, and then the engineers tried to cement the foundations of the tower by injecting cement in addition To the use of many types of materials, the tower did not stop, as the tower tilted at a rate of 1.2 mm annually, and was at risk of collapse, and in 1990 all bells were stopped and the tower was closed, and the tower has stopped tilting at the present time, and engineers expect that It has been stable for at least 200 years.
The fall of the Leaning Tower
There are many questions about the possibility of the Leaning Tower of Pisa falling, as experts expect the tower to remain in place for 200 years before it falls, and the tower may remain almost permanent forever if the restoration work continues in it, as restoration work that took place during the period between 1999 and 2001 AD contributed to the survival of The tower is stable, and the weight of the structure has been placed on the northern end, where the soil has been extracted from below, which slows down its speed.
