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  2. Cable barrier - Wikipedia

    en.wikipedia.org/wiki/Cable_barrier

    Rigid barriers such as concrete and semi-rigid barriers such as steel guardrail, exhibit impact deflections of 0 to 4 ft (1.2 metres), respectively. [1] Flexible systems such as cable barriers deflect between 8 and 12 ft (2.4 and 3.7 metres) upon impact.

  3. High lead logging - Wikipedia

    en.wikipedia.org/wiki/High_lead_logging

    High lead logging is a method of cable logging using a spar, yarder and loader. It was developed by Oscar Wirkkala. It is accomplished with two lines (cables) and two winches (or cable drums). The mainline or yarding line extends out from one winch, while a second usually lighter line called the haulback line extends out from the other winch to ...

  4. Cable logging - Wikipedia

    en.wikipedia.org/wiki/Cable_logging

    High Lead logging in Western Oregon Cable grue Larix 3T, installed on agricultural tractor. Cable logging, also referred to as skyline logging, is a logging method primarily used on the West Coast of North America with yarder, loaders, and grapple yarders, but also in Europe (Austria, Switzerland, Czech Republic, France, Italy).

  5. Cable jetting - Wikipedia

    en.wikipedia.org/wiki/Cable_Jetting

    Longer installation distances can be reached; Installation distance less dependent on bends and undulations in duct; Forces exerted on the cable are lower; Easier use jet in tandem operation; The step of installing a winch rope is avoided; Equipment is needed only at one end of the duct route

  6. Wire rope - Wikipedia

    en.wikipedia.org/wiki/Wire_rope

    Steel wire rope (right hand lang lay) Wire rope is composed of as few as two solid, metal wires twisted into a helix that forms a composite rope, in a pattern known as laid rope. Larger diameter wire rope consists of multiple strands of such laid rope in a pattern known as cable laid. Manufactured using an industrial machine known as a strander ...

  7. Guy-wire - Wikipedia

    en.wikipedia.org/wiki/Guy-wire

    A guy-wire, guy-line, guy-rope, down guy, or stay, also called simply a guy, is a tensioned cable designed to add stability to a freestanding structure. They are used commonly for ship masts , radio masts , wind turbines , utility poles , and tents .

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Block and tackle - Wikipedia

    en.wikipedia.org/wiki/Block_and_tackle

    When installing a block on an existing line, it is often inconvenient at best to thread the rope through the block to be added. Open blocks have a space wide enough between the fixed cheeks to be able to slide the pulley over the rope. These can be extremely small and light while retaining significant strength due to the lack of moving parts.

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