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Valmont Industries, Inc. is a large, publicly held American manufacturer of Valley center pivot and linear irrigation equipment, windmill support structures, lighting and traffic poles and steel utility poles. Their corporate office is in Omaha, Nebraska. Their plant and aviation department is in Valley, Nebraska.
A gin pole used to install a weather vane atop the 200-foot steeple of a church Roof trusses being assembled with gin poles. The gin pole is derived from a gyn, and considered a form of derrick, called a standing derrick or pole derrick, [2] distinguished from sheers (or shear legs) by having a single boom rather than a two-legged one.
Poles, from which these buildings get their name, are natural shaped or round wooden timbers 4 to 12 inches (100 to 300 mm) in diameter. [4] The structural frame of a pole building is made of tree trunks, utility poles, engineered lumber or chemically pressure-treated squared timbers which may be buried in the ground or anchored to a concrete slab.
Tubular steel poles are typically used in urban areas. High-voltage lines are often carried on lattice-type steel towers or pylons. For remote areas, aluminum towers may be placed by helicopters. [4] [5] Concrete poles have also been used. [1] Poles made of reinforced plastics are also available, but their high cost restricts application.
A utility pole, commonly referred to as a transmission pole, telephone pole, telecommunication pole, power pole, hydro pole, telegraph pole, or telegraph post, is a column or post used to support overhead power lines and various other public utilities, such as electrical cable, fiber optic cable, and related equipment such as transformers and ...
The American Institute of Steel Construction (AISC) is a not-for-profit technical institute and trade association for the use of structural steel in the construction industry of the United States. AISC publishes the Steel Construction Manual, an authoritative volume on steel building structure design that is referenced in all U.S. building codes.
The SAE steel grades system is a standard alloy numbering system (SAE J1086 – Numbering Metals and Alloys) for steel grades maintained by SAE International. In the 1930s and 1940s, the American Iron and Steel Institute (AISI) and SAE were both involved in efforts to standardize such a numbering system for steels.
EN 10220: Seamless and welded steel tubes — Dimensions and masses per unit length; EN 10240: Internal and/or external protective coating for steel tubes - specification for hot dip galvanized coatings applied in automatic plants; EN 10270-1: Steel wire for mechanical springs - Part 1: Patented cold drawn unalloyed spring steel wire