Gustave Eiffel, the tower design is a distinctive gateway to the 1889 International Exhibition in Paris, which was approved by the centennial of the French Revolution demonstrated the technical capacity in French then. The construction cost of building the tower about 7,800,000 French francs, gold, much of which was recovered from the sale of tickets of the show.
In 1964 the tower was registered on the list of historical monuments of the city of Paris.
[Changed] the design and construction
Construction work started in January 26, 1887, and continued for 26 months with approximately 50 engineers and 300 workers; as in the first five months building the foundation building the tower while it took the twenty-first month following the end all the work in March 31, 1889. The tower was opened officially in May 6, 1889.
The period 1887-1889 has been building a record, given the tools available in that era and compare it with the accuracy and the magnitude being experienced by this construction.
18.038 tower consists of a piece of iron and 2.5 million total nail and weighs 10.100 tons, which is based on four pillars, including a base with dimensions of 125 * 125 meters of any area of 15.625 square meters (m 2) was found in the tower ladders containing 1.665 degree, and was permitted only of use to the public until the second round. As a result, reaching the summit is through the use of one of the elevators in this role. The two Almsaadin about 100 flights per day to and from the Summit; an average of one every 8 minutes approximately. The height of the tower construction time of 300 meters (984 feet), and then add the flag in the same year, bringing the height to 312 meters (1024 feet), but after the addition of the radio antenna on top, the tower has become a high total 324 meters (1063 feet), is the longest building in the world.
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