Engineers : Maurice Koechlin and Emile Nouguier Architect : Stephen Sauvestre Contractor : Gustave Eiffel Occasion for Construction: 1889 Universal Exhibition Construction Period: 23 January 1887 to March 1889 (2years, 2months and 5days) Tower inaugurated: March 31, 1889 Number of Iron Workers: 300 Rivets: 2.500.000 Iron pieces: 18.038Height: 300,51 meters (986 feet) (+/- 15 cm depending on temperature) 1st level: 57 meters 2nd level: 115 meters 3rd level: 276 meters Height including television antenna: 320,755 meters (1052 feet) Weight: 7.000 tons (1.000 tons removed during 1990’s renovation) Base: 412 feet square, although also noted as about 2.5 acres Foundation Pressure: 58.26 to 64 psi (9000 psf) Paint: 50 tons every 7 years Paint Color: Dark Brown