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In stricter senses, the term wire rope refers to a diameter larger than 9.5 mm (3 ⁄ 8 in), with smaller gauges designated cable or cords. [1] Initially wrought iron wires were used, but today steel is the main material used for wire ropes. Historically, wire rope evolved from wrought iron chains, which had a record of mechanical failure.
The Man Who Walked Between the Towers is an American children's picture book written and illustrated by the American author Mordicai Gerstein.Published in 2003, the book recounts the achievement of Philippe Petit, a French man who walked on a tightrope wire between the roofs of the twin towers of the World Trade Center in August 1974.
Philippe Petit (French pronunciation: [filip pəti]; born 13 August 1949) is a French highwire artist who gained fame for his unauthorized highwire walks between the towers of Notre-Dame Cathedral in Paris in 1971 and of Sydney Harbour Bridge in 1973, as well as between the Twin Towers of the World Trade Center in New York City in August 1974.
John Augustus Roebling (born Johann August Röbling; June 12, 1806 – July 22, 1869) was a German-born American civil engineer. [1] He designed and built wire rope suspension bridges, in particular the Brooklyn Bridge, which has been designated as a National Historic Landmark and a National Historic Civil Engineering Landmark.
Man on Wire is a 2008 documentary film directed by James Marsh. The film chronicles Philippe Petit's 1974 high-wire walk between the Twin Towers of New York's World Trade Center. It is based on Petit's 2002 book, To Reach the Clouds, released in paperback with the title Man on Wire. The title of the film is taken from the police report that led ...
Typical values are 1.04 for roller bearing sheaves and 1.09 for plain bearing sheaves (with wire rope). [11] The increased force produced by a tackle is offset by both the increased length of rope needed and the friction in the system. In order to raise a block and tackle with a mechanical advantage of 6 a distance of 1 metre, it is necessary ...
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 .
Ropes suspended at operating level, permanently or temporarily. Ropes held on the water surface by buoys. Cables suspended underwater, permanently or temporarily. Ground cables normally resting on the bottom, pulled to the surface near the ferry. Possible forces and catenaries for a small cable ferry with chain or wire rope compared.
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