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  2. Tube (structure) - Wikipedia

    en.wikipedia.org/wiki/Tube_(structure)

    By 1963, a new structural system of framed tubes had appeared in skyscraper design and construction. Fazlur Rahman Khan, a structural engineer from Bangladesh (then called East Pakistan) who worked at Skidmore, Owings & Merrill, defined the framed tube structure as "a three dimensional space structure composed of three, four, or possibly more frames, braced frames, or shear walls, joined at or ...

  3. List of tallest freestanding structures - Wikipedia

    en.wikipedia.org/wiki/List_of_tallest...

    This is a list of tallest freestanding structures in the world past and present. To be freestanding a structure must not be supported by guy wires , the sea or other types of auxiliary support. It therefore does not include guyed masts , partially guyed towers and drilling platforms but does include towers , skyscrapers ( pinnacle height) and ...

  4. List of tallest freestanding steel structures - Wikipedia

    en.wikipedia.org/wiki/List_of_tallest...

    Bullwinkle Platform: 529 1,736 1989 Rigid Steel Jacket (truss tower) Oil Rig United States Gulf of Mexico: When built the Bullwinkle platform was the second tallest freestanding structure in the world after the CN Tower. 3 Willis Tower (formerly Sears Tower) 527.0 1,729 1974 Skyscraper Office, observation, FM/TV-broadcasting United States Chicago

  5. Lattice tower - Wikipedia

    en.wikipedia.org/wiki/Lattice_tower

    Oil Platform, Compliant tower 2000 United States Gulf of Mexico: 640 2,100 $500 million 50,500 [3] Tallest lattice tower of any type. Supported by water 2 Tokyo Skytree: Lattice tower 2012 Japan Sumida, Tokyo: 634 2,080 $806 million [4] 36,000 tons [5] Tallest free standing lattice tower 3 Baldpate Compliant Tower: Oil Platform, Compliant tower ...

  6. Offshore concrete structure - Wikipedia

    en.wikipedia.org/wiki/Offshore_concrete_structure

    [citation needed] The design typically consists of a large volume caisson based on the sea floor merging into a monolithic structure, which is offering the base for the deck. The single main leg is surrounded by an outer breaker wall perforated with so called Jarlan holes. This wall is intended to break up waves, thus reducing their forces.

  7. Fixed platform - Wikipedia

    en.wikipedia.org/wiki/Fixed_platform

    A fixed platform base under construction on a Louisiana river. A fixed platform is a type of offshore platform used for the extraction of petroleum or gas. These platforms are built on concrete and/or steel legs directly planted onto the seabed, supporting a deck with space for drilling rigs, production facilities and crew quarters. [1]