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  2. Concrete cone failure - Wikipedia

    en.wikipedia.org/wiki/Concrete_cone_failure

    The tension failure loads predicted by the CCD method fits experimental results over a wide range of embedment depth (e.g. 100 – 600 mm). [2] Anchor load bearing capacity provided by ACI 349 does not consider size effect, thus an underestimated value for the load-carrying capacity is obtained for large embedment depths.

  3. Preload control - Wikipedia

    en.wikipedia.org/wiki/Preload_control

    bolt-strecth method utilizes a hydraulic ram that stretches the bolt by pulling on the threaded section of the bolt that protrudes through the nut. Nut is rotated into position with very small torque applied. Once the external stretching force is removed, the preload is established; heat tightening is based on stretching the bolt by heating it ...

  4. Anchor bolt - Wikipedia

    en.wikipedia.org/wiki/Anchor_bolt

    A cast-in-place anchor bolt. The simplest – and strongest – form of anchor bolt is cast-in-place, with its embedded end consisting of a standard hexagonal head bolt and washer, 90-bend, or some sort of forged or welded flange (see also stud welding). The last are used in concrete-steel composite structures as shear connectors. [6]

  5. Multi-jackbolt tensioner - Wikipedia

    en.wikipedia.org/wiki/Multi-jackbolt_tensioner

    Multi-jackbolt tensioners (MJTs), registered under the trademark Superbolt or Supernut, are designed to decrease the torque required to tighten large bolted joints. One of the major problems associated with traditional bolt tightening methods is as the diameter of the bolt increases, the amount of torque required to tighten it increases in the third power of the diameter. [1]

  6. List of screw and bolt types - Wikipedia

    en.wikipedia.org/wiki/List_of_screw_and_bolt_types

    anchor bolt: A special type of bolt that is set into concrete, with screw threads protruding above the concrete surface to accept a nut. breakaway bolt: A breakaway bolt is a bolt with a hollow threaded shank, which is designed to break away upon impact. Typically used to fasten fire hydrants, so they will break away when hit by a car. Also ...

  7. Anchor channel - Wikipedia

    en.wikipedia.org/wiki/Anchor_channel

    Anchor channels, invented by Anders Jordahl in 1913, are steel channels cast flush in reinforced concrete elements to allow the installation of channel bolts for the fastening of components. Anchor channels consist of steel C-shaped channels and anchors (mostly headed studs ) which are connected to the channel by welding or riveting/forging.

  8. Parents charged with abuse after child's botched circumcision ...

    www.aol.com/parents-charged-abuse-childs-botched...

    After deputies arrested the child's father at the family's home, he reportedly agreed to speak with officers and, according to the complaint, said he used "a utility tool" for the procedure.

  9. Bolt (fastener) - Wikipedia

    en.wikipedia.org/wiki/Bolt_(fastener)

    Anchor bolt - Bolt designed to allow objects to be attached to concrete. The bolt head is usually placed in concrete before it has cured or placed before the concrete is poured, leaving the threaded end exposed. Arbor bolt - Bolt with a washer permanently attached and reversed threading. Designed for use in miter saw and other tools to auto ...

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