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  2. Weir - Wikipedia

    en.wikipedia.org/wiki/Weir

    A notch weir is any weir where the physical barrier is significantly higher than the water level except for a specific notch (often V-shaped) cut into the panel. At times of normal flow all the water must pass through the notch, simplifying flow volume calculations, and at times of flood the water level can rise and submerge the weir without ...

  3. Notch (engineering) - Wikipedia

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

    Charpy test sample with a notch. In mechanical engineering and materials science, a notch refers to a V-shaped, U-shaped, or semi-circular defect deliberately introduced into a planar material. In structural components, a notch causes a stress concentration which can result in the initiation and growth of fatigue cracks.

  4. Welded wire mesh fence - Wikipedia

    en.wikipedia.org/wiki/Welded_wire_mesh_fence

    Welded wire mesh fence is a steel fence consisting of wire strands electrically welded together to form a high strength mesh. The fencing is available in two formats: rolled mesh and rigid mesh. Over the last 30 years rigid mesh fencing has become the system of choice for demarcation across the UK, Europe and Australia.

  5. Barbed wire - Wikipedia

    en.wikipedia.org/wiki/Barbed_wire

    Barbed wire fences remain the standard fencing technology for enclosing cattle in most regions of the United States, but not all countries. The wire is aligned under tension between heavy, braced, fence posts (strainer posts) and then held at the correct height by being attached to wooden or steel fence posts, and/or with battens in between.

  6. Perimeter fence - Wikipedia

    en.wikipedia.org/wiki/Perimeter_fence

    In high-security applications, sensors may be attached to the fence that generate alarms when they detect someone cutting, climbing, or lifting the fence fabric. The goal of perimeter fence. The goal of perimeter fence is to stop or prevent the incident and reduce the level of risk. Doing so discourages the perpetrator from committing a harmful ...

  7. Chain-link fencing - Wikipedia

    en.wikipedia.org/wiki/Chain-link_fencing

    Chain-link fencing showing the diamond patterning A chain-link fence bordering a residential property. A chain-link fence (also referred to as wire netting, wire-mesh fence, chain-wire fence, cyclone fence, hurricane fence, or diamond-mesh fence) is a type of woven fence usually made from galvanized or linear low-density polyethylene-coated steel wire.

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  9. Steel fence post - Wikipedia

    en.wikipedia.org/wiki/Steel_fence_post

    A steel fence post, also called (depending on design or country) a T-post, a Y-post, or variants on star post, is a type of fence post or picket. They are made of steel and are sometimes manufactured using durable rail steel. They can be used to support various types of wire or wire mesh.

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