This article relates how a new aircraft control tower for London's Heathrow Airport's fifth terminal was installed from the top down. The $80 million tower was prefabricated off site and raised with a three tower lifting system. Strand jacks were used to keep equipment below the airport's operational radar ceiling. Additional strand jacks were used to control tension in cables guying the rising control tower. An algorithm was used by the guy wires, allowing for pressure and movement to be sensed, thus keeping the tower vertical. Global Positioning System (GPS) and laser technology, as well as optical monitoring, provided the ability to have continuous, real-time monitoring of verticality and movement.

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  • Corporate Authors:

    McGraw-Hill, Incorporated

    330 West 42nd Street
    New York, NY  United States  10036
  • Publication Date: 2005-3-21


  • English

Media Info

  • Features: Photos;
  • Pagination: p. 14
  • Serial:
    • ENR
    • Volume: 254
    • Issue Number: 11
    • Publisher: McGraw-Hill, Incorporated
    • ISSN: 0891-9526

Subject/Index Terms

Filing Info

  • Accession Number: 00989367
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Files: BTRIS, TRIS
  • Created Date: May 3 2005 12:00AM