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  2. Jack (device) - Wikipedia

    en.wikipedia.org/wiki/Jack_(device)

    A 2.5-ton house jack that stands 24 inches from top to bottom fully threaded out. A house jack, also called a screw jack, is a mechanical device primarily used to lift buildings from their foundations for repairs or relocation. A series of jacks is used and then wood cribbing temporarily supports the structure. This process is repeated until ...

  3. Jamalpur Locomotive Workshop - Wikipedia

    en.wikipedia.org/wiki/Jamalpur_Locomotive_Workshop

    The Jamalpur jack has a capacity to lift a load of 25 tonnes (24.6 long tons; 27.6 short tons) [8] and four such jacks make one complete set with a total lifting capacity of 100 tonnes. These Jacks can be operated simultaneously or individually.

  4. Strand jack - Wikipedia

    en.wikipedia.org/wiki/Strand_jack

    Strandjack at Freybridge in Berlin–Spandau 52° 30′ 42,11″ N, 13° 12′ 11,7″ O. A strand jack (also known as strandjack) is a jack used to lift very heavy loads (e.g. thousands of tons or more with multiple jacks) for construction and engineering purposes. [1]

  5. Jackscrew - Wikipedia

    en.wikipedia.org/wiki/Jackscrew

    A 2.5-ton screw jack. The jack is inserting the bar (visible lower left) in the holes at the top and turning.. A jackscrew, or screw jack, is a type of jack that is operated by turning a leadscrew.

  6. Taisun - Wikipedia

    en.wikipedia.org/wiki/Taisun

    Taisun was built to install very large (up to 20,000 tons) integrated modules on top of a vessel's hull. Traditionally, offshore vessels such as drilling semi submersibles or FPSOs were built from the ground up in modules of 1000 to 2000 tons, which meant that much installation, hook up and commissioning work was left to be done on board where access is limited and efficiency is decreased.

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