THE TOWER EIFFEL :
The Eiffel Tower was constructed in 1889 on the occasion of the Universal-Exposure that had celebrated the centenary of the French Revolution.
ENTREPRENEUR :GUSTAVE EIFFEL & CIE
Engineers :Maurice Koechlin & Emile Nouguier
Architect : Stephen Sauvestre
Study : 1884
Execution : 1887-1889 (2 years, 2 months, 5 days)
50 engineers, drawers executed 5.300 drawings; 100 workers shaped 18.038 pieces made of iron; 121 workers worked on the building site.
The EIFFEL TOWER is light, it only exercises a pressure of 4, 5 kg/cm2 on its foundations. If we place the Eiffel Tower in a cylinder of air, its weight doesn't pass the weight of cylinder’s air.
Weight of the metallic framework : 7.300 tons.
Total weight : 10.100 tons.
During the wind action, the summit moves from 6 to 7 cm. During the heat action, the summit describes a curve being able to go up to18 cm. Measures 1889 (height with flag): 312, 27 m; Measures 2000: (height with antenna): 324 m