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Single helix earth anchors Guyed mast anchor. An earth anchor is a device designed to support structures, most commonly used in geotechnical and construction applications. Also known as a ground anchor, percussion driven earth anchor or mechanical anchor, it may be impact driven into the ground or run in spirally, depending on its design and intended force-resistance characteristics.
Screw pile designers typically use their own design software which has been developed through field testing of differing compression pile and tension anchor configurations in various soil profiles. Corrosion is addressed based on extended field trials, combined with worldwide databases on steel in ground corrosion.
Albert Bishop Chance (1873–1949) was a businessman and the inventor of the first practical earth anchor. [1] He founded the A.B. Chance Company in 1907 in his hometown of Centralia, Missouri, where he would also become mayor [2] He invented the earth anchor after an ice storm knocked down his parents' company's telephone lines.
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The CQR is now manufactured by Lewmar. The CQR Anchor is still used by the Royal Navy on their coastal protection vessels such as the Archer Class. American Richard Danforth invented and developed the "Danforth" pattern in the 1940s, a return to the symmetrical concept but with very large flat plate flukes. This anchor offers very good holding ...
Simpson Manufacturing Company is a leading building materials manufacturer in the United States that produces structural connectors, fasteners, anchors, and products for new construction and retrofitting. The company was founded by Barclay Simpson in Oakland in 1956, as a successor to his father's window screen company. [1]
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