The Leaning Tower of Pisa
V. Ryan © 2002
During the 11th century three buildings were
constructed in the ‘Field of Miracles’ including the circular bell tower
we now know as the Leaning Tower of Pisa.
By 1360 the tower was still leaning towards the south and consequently more steps were added to the top. Six steps were added to the south side and four to the north side. This was an attempt to prevent the angle of lean becoming worse. The tower was completed in 1370.
The tower continued to lean and the results of
surveys and tests carried out in the 1990s suggested that it would
collapse by the middle of the 21st century. Attempts to prevent further
leaning failed and in fact made the situation worse.
How the Engineering Worked
|1. Draw a map of Italy
and clearly show the location of the town Pisa.
2. Using a simple diagram, explain how the lean of the tower was reduced.