Tour Eiffel

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Tour Eiffel

HISTORYIn 1889, Paris hosted a World’s Fair or an Exposition Universelle that marked the 100 anniversary of the French Revolution. Therefore, architect and metals expert Alexandre-Gustave Eiffel collaborated with a structural engineer named Maurice Koechlin. The construction took over two years in which around seven hundred workers assisted. In its inauguration held on March 1889 the tower stood nearly 10,000 feet high and was also the tallest structure in the world. At first the whole structure wasn’t opened to the public, only the second-floor. But as time went on all three levels were opened. Now a days each level has as its distinctive feature and they also can be reached by using the stairs or elevator. Everyone was marveled by the structure but Parisians, they feared it was structurally unsound or eyesore. At first it was going to be just a temporary exhibit and was about to be torn down in 1909. But they decided to keep it because it helped as a radiotelegraph station. During World War Two II it was also about to be demolished when Hitler order it but the French cut the elevator cables so Nazi’s had to climb the stairs. In 1986 it had a major fixup, since then it is painted every seven years so it doesn’t go rust. Now it has become one of the most popular buildings around the world.

RELATION TO ALGEBRAThe height of the Eiffel Tower is around 985 feet. The first platform's height is 189 feet off the ground, the second's is 380 feet off the ground, and the third platform is 906 feet above ground with the top of the tower reaching 985 feet. It weighs in around 7,000-10,000 tons, depending on weather it is summer or winter. In the summer the poles expand, causing more weight to be added. It shrinks 6 inches during the winter, and expands 5.35 inches during the summer. Its cost is more that 240 million dollars. It has 2,500,000 rivets in it, and has 1710 steps.In relation to math Mr. Eiffel had to calculate every detail so the tower wouldn’t fall. Therefore, he added the curve in the legs and used an equation ( Let a be a point on the edge of the tower. Let x be the distance between the top of the tower and a. P(x) be the weight of the part of the tower above a, up to the top of the tower. Let f(x) be the half width of the tower at a. the moment of the weight of the tower relative to point a is equal to p(x) and f(x). You would have to fill in the variables.)Also calculating the slopes and the total height of the construction to see how heavy would the iorns need to be.

ParisIt is a modern and dynamic city with significant universities and cultural life. Also many commercial, business,administrative, scientific and political activities. In other aspects it is also one of the worlds capital fashion cities. With desginers and shops like Chanel, Dior, Vuitton, Yves Saint Laurent among many other top french fashion brands.


Andrea L.

Renata B.


SCIENTIFIC FACTSThe Eiffel Tower has had over 250 million visitors since its opening.It was designed to be wind resistant, swaying only a few inches in the wind. IIt moves further when the iron on the sun facing side heats and expands, moving the top up to 7 inches (18 centimetres) away from the sun.Around 50 tonnes of paint are added to the Eiffel Tower every 7 years to protect it from rust.It’s made of iron and weighs around 10000 tonnes.The Eiffel Tower is 320 metres (1050 feet) in heightIt was the tallest man made structure in the world for 41 years before being surpassed by the Chrysler Building in New York.Eiffel Tower has also inspired more than 30 replicas and similar structures in various cities around the world.During World War I, the Eiffel Tower intercepted enemy radio communications, relayed zeppelin alerts and was used to dispatch emergency troop reinforcements.It welcomes more visitors than any other paid monument in the world—an estimated 7 million people per year. 500 employees are responsible for its daily operations (working in its restaurants, manning its elevators, ensuring its security and directing the eager crowds flocking the tower’s platforms to enjoy panoramic views of the City of Lights).

Manuela Ll., Andrea L., Renata B. P7


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