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  2. Box crib - Wikipedia

    en.wikipedia.org/wiki/Box_crib

    A lightweight box crib Hardwood railway sleepers used as a box crib, North Australian Railway, 1975 Bailey Island Bridge, Harpswell, Maine. The only granite cribstone bridge in the world. A box crib or cribbing is a temporary wooden structure used to support heavy objects during construction, relocation, vehicle extrication and urban search and ...

  3. Plug and feather - Wikipedia

    en.wikipedia.org/wiki/Plug_and_feather

    The plugs are then struck with a hammer in sequence. An audible tone from the wedges changes to a 'ringing sound' when the wedges are tight. Between each series of strikes, a pause of several minutes allows the stone to react to the pressure. Eventually a crack appears along the line that was scored on the surface and the stone splits apart.

  4. Shim (spacer) - Wikipedia

    en.wikipedia.org/wiki/Shim_(spacer)

    Guitarists have often used strips cut from business cards, credit cards or picks as shim material, while luthiery supply stores have started to sell specialized hardwood precision wedges for that purpose. [4] On printed circuit boards, special CPU shims are used to protect the central processing unit when installing a heat sink.

  5. Treenail - Wikipedia

    en.wikipedia.org/wiki/Treenail

    As an alternative to the wedge, the treenail can receive a plug or a punch to the center that expands the entire circumference. While this method prevents leaks by reducing gaps, plugs and punches are more likely to fall out in cold temperatures. Ideally, the nose of the treenail is driven 4–5 cm clear of the timber before being trimmed. [9]

  6. Shoring - Wikipedia

    en.wikipedia.org/wiki/Shoring

    Shoring is used on board when damage has been caused to a vessel's integrity, and to hold leak-stopping devices in place to reduce or stop incoming water. Generally consists of timber 100 mm x 100 mm and used in conjunction with wedges, to further jam shoring in place, pad pieces to spread the load and dogs to hold it together. Also used on ...

  7. Woodworking - Wikipedia

    en.wikipedia.org/wiki/Woodworking

    While there are an abundant number of hardwood species, only 200 are common enough and pliable enough to be used for woodworking. [12] Hardwoods have a wide variety of properties, making it easy to find a hardwood to suit nearly any purpose, but they are especially suitable for outdoor use due to their strength and resilience to rot and decay. [10]

  8. Wood shingle - Wikipedia

    en.wikipedia.org/wiki/Wood_shingle

    The traditional method for making wooden shingles before the 19th century was to rive (hand split) them from straight-grained knot-free sections of logs pre-cut to the desired length known as bolts. These bolts were quartered or split into wedges. A mallet and froe (or axe) were used to split or rive out thin pieces of wood.

  9. Falsework - Wikipedia

    en.wikipedia.org/wiki/Falsework

    Falsework parallel truss bridges temporarily supporting deck segment box structures Overpass under construction over Interstate 5 in Burbank, California, in July 2021 [4] [5] Sixth Street Viaduct Falsework - Bent 11 Jump Span. Shown in the background is a concrete Y-Arm.

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