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Anchors can fail in different way when loaded in shear: [3] Steel failure: the rod reaches the yielding capacity then rupture occurs after development of large deformations. Concrete edge: a semi-conical fracture surface develops originating from the point of bearing up to the free surface.
An anchor plate, floor plate [1] or wall washer is a large plate or washer connected to a tie rod or bolt. Anchor plates are used on exterior walls of masonry buildings, for structural reinforcement against lateral bowing. Anchor plates are made of cast iron, sometimes wrought iron or steel, and are often made in a decorative style. [2]
Modern forms are the plate anchor, in which the guy is attached to a rod with an eyelet extending from the center of a steel plate buried diagonally, perpendicular to the angle of the guy. In the concrete anchor, a diagonal rod with an eyelet extending in the guy direction is cemented into a hole filled with steel reinforced concrete.
Reinforcing bars in masonry construction have been used since antiquity, with Rome using iron or wooden rods in arch construction. [5] Iron tie rods and anchor plates were later employed across Medieval Europe, as a device to reinforce arches, vaults, and cupolas. [6] [7] 2,500 meters of rebar was used in the 14th-century Château de Vincennes. [8]
Grouted tiebacks can be constructed as steel rods drilled through a concrete wall out into the soil or bedrock on the other side. Grout is then pumped under pressure into the tieback anchor holes to increase soil resistance and thereby prevent tiebacks from pulling out, reducing the risk for wall destabilization.
A tie rod or tie bar (also known as a hanger rod if vertical) is a slender structural unit used as a tie and (in most applications) capable of carrying tensile loads only. It is any rod or bar-shaped structural member designed to prevent the separation of two parts, as in a vehicle. Tie rods and anchor plates in the ruins of Coventry Cathedral
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A pipe anchor is a rigid support that restricts movement in all three orthogonal directions and all three rotational directions, i.e. restricting al the 6 degrees of freedom This usually is a welded stanchion that is welded or bolted to steel or concrete. [2] In case of anchor which is bolted to concrete, a special type of bolt is required ...
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