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  2. Anchor bolt - Wikipedia

    en.wikipedia.org/wiki/Anchor_bolt

    In this case, concrete base material might be undamaged. Pull-out: the anchor is pulled out from the drilled hole partially damaging the surrounding concrete. When the concrete is damaged the failure is also indicated as pull-through. Concrete cone: after reaching the load-bearing capacity a cone shape is formed.

  3. Hold down (structural engineering) - Wikipedia

    en.wikipedia.org/wiki/Hold_down_(structural...

    A hold-down may also refer to clamping device used to anchor a pipe to a structural steel element or concrete floor or allow movement of the pipe in an axial direction. [1] At the bottom, the hold down is connected to the concrete foundation or structural slab by an embedded or epoxied anchor bolt. At the top, the hold down is connected to a ...

  4. Powder-actuated tool - Wikipedia

    en.wikipedia.org/wiki/Powder-actuated_tool

    Powder-actuated tools come in high-velocity and low-velocity types. In high-velocity tools, the propellant charge acts directly on the fastener in a process similar to a firearm. Low-velocity tools introduce a piston into the chamber. The propellant acts on the piston, which then drives the fastener into the substrate.

  5. Rail fastening system - Wikipedia

    en.wikipedia.org/wiki/Rail_fastening_system

    A tie plate, baseplate or sole plate is a steel plate for centering and reinforcing the attachment point on the rail tracks between a flanged T rail and a railroad tie. The tie plate increases bearing area and holds the rail to correct gauge. It is fastened to wooden ties by means of spikes or bolts through holes in the plate.

  6. Tie (engineering) - Wikipedia

    en.wikipedia.org/wiki/Tie_(engineering)

    A hurricane tie used to fasten a rafter to a stud. A tie, strap, tie rod, eyebar, guy-wire, suspension cables, or wire ropes, are examples of linear structural components designed to resist tension. [1] It is the opposite of a strut or column, which is designed to resist compression. Ties may be made of any tension resisting material.

  7. 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]