Topic : Foundation
Tokyos Imperial Hotel
The great architect Frank Lloyd Wright was given the challenge of building the Imperial Hotel in Tokyo, one of the most earthquake-prone cities in the world. Wrights investigation showed that a solid foundation could be floated on a sixty-foot layer of soft mud underlying the hotel, which would provide a shock-absorbing but solid support for the immense building.
Shortly after the hotel was completed it withstood the worst earthquake in fifty-two years, while lesser buildings fell in ruins around it.
Leaning Tower of Pisa
The Leaning Tower of Pisa in Italy is going to fall. Scientists travel yearly to measure the buildings slow descent. They report that the 179-foot tower moves about one-twentieth of an inch a year, and is now 17 feet out of plumb. They further estimate that by the year 2007 the 810-year old tower will have leaned too far and will collapse onto the nearby ristorante, where scientists now gather to discuss their findings.
Quite significantly, the word pisa means marshy land, which gives some clue as to why the tower began to lean even before it was completed. Alsoits foundation is only 10 feet deep!