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Your Location: World North America U.S.A. New York New York City One World Trade Center

One World Trade Center

Identification

One World Trade Center
WTC North Tower, World Trade Center I, Tower A
131020

Map

Structure in General

skyscraper
demolished [destroyed]
framed tube
steel
aluminum
curtain wall
light gray
modernism

Usage

commercial office
restaurant

Facts

  • Windows of the World Restaurant (the world's highest) occupied the 107th floor.
  • World's tallest building from 1972 - 1974; surpassed by the Willis Tower in Chicago.
  • The building was destroyed in the terrorist attacks of September 11th 2001, when a Boeing 767 was flown into the building at the 85th floor at roughly 9:00 am. The building collapsed at 10:28 am.
  • Faced with the difficulties of building to unprecedented heights, the engineers employed an innovative structural model: a rigid "hollow tube" of closely spaced steel columns with floor trusses extending across to a central core.
  • The columns, finished with a silver-colored aluminum alloy, were 18 3/4" wide and set only 22" apart, making the towers appear from afar to have no windows at all.
  • Also unique to the engineering design were its core and elevator system.
  • Worried that the intense air pressure created by the buildings' high speed elevators might buckle conventional shafts, engineers designed a solution using a drywall system fixed to the reinforced steel core.
  • The twin towers were the first super-tall buildings designed without any masonry.
  • One World Trade Center was ready for its first tenants in late 1970, though the upper stories were not completed until 1972.
  • On 7th August 1974, French high wire artist Philippe Petit made an illegal tightrope walk back and forth between One and Two World Trade Center towers that lasted almost an hour.
  • Replaced the Empire State Building as the city's and the world's tallest building.

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More Information

Location

West Street
10048
U.S.A.

Technical Data

1,725.72 ft
1,368.11 ft
1,368.11 ft
1,354.99 ft
207.16 ft
207.16 ft
110
1966
1972
Sep 2001
99
16

Involved Companies

Design Architect:

Associate Architect:

Also recorded for this building:

concrete supplier, demolition company, developer, electrical engineering, elevator supplier, facade supplier, fire protection engineering, lighting consultant, lightning protection, mechanical engineering, roofing supplier, structural engineering, wind surveyor

Features & Amenities

  • One of the city's famous buildings