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Rigging is the equipment such as wire rope, turnbuckles, clevis, jacks used with cranes and other lifting equipment [1] in material handling and structure relocation. Rigging systems commonly include shackles, master links and slings, and lifting bags in underwater lifting.
Hoist atop an elevator. A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium.
The Occupational Safety and Health Administration sets regulations for all equipment. [3] Contractors are forced to uphold usually strict rules to ensure safety of workers. All machinery is required to be developed by a certified engineer, contractors must follow manufacturer procedures, all users be professionally trained before operating equipment, and equipment must be inspected regularl
In 1991 its workforce was 5,400 which dropped to 4,000 at the end of 1993, and produced in 20 countries with 76 service centres; it was the world's biggest supplier of wire rope. In April 1993 it won a Queen's Award for Technological Achievement [2] for its Brifen fencing. Prince Andrew, Duke of York visited the site on 20 October 2011. [3] [4]
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 ...
Slings and now more often 3-foot alpine draws or shorter quickdraws are used in-between pieces of protection and the rope to minimize rope drag [2] Hitch around a chock stone or a tree to use as passive protection [2] Clove hitch around chicken heads or sling around horns [2] Longer slings or cordelettes can be used for equalized belay stations