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torque controlled: the anchor is inserted into the hole and secured by applying a specified torque to the bolt head or nut with a torque wrench. A particular sub-category of this anchor is called wedge type. As shown in the figure, tightening the bolt results in a wedge being driven up against a sleeve, which expands it and causes it to ...
The weight of the element can be determined by the calculated volume, and using the specific gravity (normal weight reinforced concrete is approximately 24 kN/m3). Establishing the lifting anchor positions will influence the rigging arrangements used and therefore the static analysis of the rigging should be determined. Particular rigging ...
This page was last edited on 19 February 2011, at 12:03 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may apply.
A rail fastening system is a means of fixing rails to railroad ties (North America) or sleepers (British Isles, Australasia, and Africa). The terms rail anchors, tie plates, chairs and track fasteners are used to refer to parts or all of a rail fastening system. The components of a rail fastening system may also be known collectively as other ...
Weigh anchor. Weigh anchor is a nautical term indicating the final preparation of a sea vessel for getting underway. Weighing anchor literally means raising the anchor of the vessel from the sea floor and hoisting it up to be stowed on board the vessel. At the moment when the anchor is no longer touching the sea floor, it is aweigh.
History of the anchor. The history of the anchor dates back millennia. The most ancient anchors were probably rocks and many rock anchors have been discovered originating from at least the Bronze Age. [1] Many modern moorings remain reliant upon a large rock as the primary element of their design. However, using pure mass to resist the forces ...
Prestressed concrete is a form of concrete used in construction. It is substantially "prestressed" (compressed) during production, in a manner that strengthens it against tensile forces which will exist when in service. [1][2]: 3–5 [3] This compression is produced by the tensioning of high-strength "tendons" located within or adjacent to the ...
A wall plug (UK English) also known as an anchor (US) or " Rawlplug " (UK), is a fibre or plastic (originally wood) insert used to enable the attachment of a screw in material that is porous or brittle or that would otherwise not support the weight of the object attached with the screw. [ 1 ][ 2 ] It is a type of anchor that, for example ...
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