Dwang

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Platform framing

In construction, a nogging [1] or nogging piece [2] (England and Australia), dwang (Scotland, [1] South Island, New Zealand, [3] and lower/central North Island, New Zealand), blocking (North America), noggin (Australia and Greater Auckland Region of New Zealand), [4] or nog (New Zealand and Australia [5] ), is a horizontal bracing piece used between wall studs or floor joists to give rigidity to the wall or floor frames of a building. Noggings may be made of timber, steel, or aluminium.[ citation needed ] If made of timber they are cut slightly longer than the space they fit into, and are driven into place so they fit tightly or are rabbeted into the wall stud. Timber noggings are fixed to the perimeter, abutments, or for the purpose of framing any openings using suitable fixings. [6]

The interval between noggings is dictated by local building codes and by the type of timber used; a typical timber-framed house in a non-cyclonic area will have two or three noggings per storey between each pair of neighbouring studs. Additional noggings may be added as grounds for later fixings.

Noggings between vertical studs generally brace the studs against buckling under load; noggings on floor joists prevent the joists from twisting or rotating under load (lateral-torsional buckling), and are often fixed at intervals, in pairs diagonally for that reason. In floors this type of bracing is also called herringbone strutting. It is also used in ceilings to prevent not only joist twisting but also ceiling damage. [7]

Noggings provide no bracing effect in shear and are generally supplemented by diagonal bracing to prevent the frame from racking.

Related Research Articles

<span class="mw-page-title-main">Wall</span> Vertical structure, usually solid, that defines and sometimes protects an area

A wall is a structure and a surface that defines an area; carries a load; provides security, shelter, or soundproofing; or, is decorative. There are many kinds of walls, including:

<span class="mw-page-title-main">Floor</span> Walking surface of a room

A floor is the bottom surface of a room or vehicle. Floors vary from simple dirt in a cave to many layered surfaces made with modern technology. Floors may be stone, wood, bamboo, metal or any other material that can support the expected load.

<span class="mw-page-title-main">Truss</span> Rigid structure that consists of two-force members only

A truss is an assembly of members such as beams, connected by nodes, that creates a rigid structure.

<span class="mw-page-title-main">Timber framing</span> Traditional building technique

Timber framing and "post-and-beam" construction are traditional methods of building with heavy timbers, creating structures using squared-off and carefully fitted and joined timbers with joints secured by large wooden pegs. If the structural frame of load-bearing timber is left exposed on the exterior of the building it may be referred to as half-timbered, and in many cases the infill between timbers will be used for decorative effect. The country most known for this kind of architecture is Germany, where timber-framed houses are spread all over the country.

<span class="mw-page-title-main">Joist</span> Horizontal framing structure

A joist is a horizontal structural member used in framing to span an open space, often between beams that subsequently transfer loads to vertical members. When incorporated into a floor framing system, joists serve to provide stiffness to the subfloor sheathing, allowing it to function as a horizontal diaphragm. Joists are often doubled or tripled, placed side by side, where conditions warrant, such as where wall partitions require support.

<span class="mw-page-title-main">Jettying</span> Medieval building technique

Jettying is a building technique used in medieval timber-frame buildings in which an upper floor projects beyond the dimensions of the floor below. This has the advantage of increasing the available space in the building without obstructing the street. Jettied floors are also termed jetties. In the U.S., the most common surviving colonial version of this is the garrison house. Most jetties are external, but some early medieval houses were built with internal jetties.

<span class="mw-page-title-main">Lath and plaster</span> Finish mainly for interior dividing walls and ceilings

Lath and plaster is a building process used to finish mainly interior dividing walls and ceilings. It consists of narrow strips of wood (laths) which are nailed horizontally across the wall studs or ceiling joists and then coated in plaster. The technique derives from an earlier, more primitive process called wattle and daub.

<span class="mw-page-title-main">Framing (construction)</span> Construction technique

Framing, in construction, is the fitting together of pieces to give a structure support and shape. Framing materials are usually wood, engineered wood, or structural steel. The alternative to framed construction is generally called mass wall construction, where horizontal layers of stacked materials such as log building, masonry, rammed earth, adobe, etc. are used without framing.

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

<span class="mw-page-title-main">Wall plate</span> A horizontal, structural, load-bearing member in wooden building framing

A plate or wall plate is a horizontal, structural, load-bearing member in wooden building framing.

In light-frame construction, a trimmer is a timber or metal beam (joist) used to create an opening around a stairwell, skylight, chimney, and the like. Trimmers are installed parallel to the primary floor or ceiling joists and support headers, which run perpendicular to the primary joists.

<span class="mw-page-title-main">Bressummer</span> Load-bearing beam in a timber-framed building

A bressummer, breastsummer, summer beam is a load-bearing beam in a timber-framed building. The word summer derived from sumpter or French sommier, "a pack horse", meaning "bearing great burden or weight". "To support a superincumbent wall", "any beast of burden", and in this way is similar to a wall plate.

<span class="mw-page-title-main">Wall stud</span> Component of a buildings wall

A wall stud is a vertical repetitive framing member in a building's wall of smaller cross section than a post. It is a fundamental element in frame building.

<span class="mw-page-title-main">Blocking (construction)</span>

Blocking is the use of short pieces of dimensional lumber in wood framed construction to brace longer members or to provide grounds for fixings.

<span class="mw-page-title-main">Sill plate</span>

A sill plate or sole plate in construction and architecture is the bottom horizontal member of a wall or building to which vertical members are attached. The word "plate" is typically omitted in America and carpenters speak simply of the "sill". Other names are rat sill, ground plate, ground sill, groundsel, night plate, and midnight sill.

<span class="mw-page-title-main">Cross bracing</span> X-shaped support substructure

In construction, cross bracing is a system utilized to reinforce building structures in which diagonal supports intersect. Cross bracing is usually seen with two diagonal supports placed in an X-shaped manner. Under lateral force one brace will be under tension while the other is being compressed. In steel construction, steel cables may be used due to their great resistance to tension. The common uses for cross bracing include bridge (side) supports, along with structural foundations. This method of construction maximizes the weight of the load a structure is able to support. It is a usual application when constructing earthquake-safe buildings.

<span class="mw-page-title-main">Cold-formed steel</span> Steel products shaped by cold-working processes

Cold-formed steel (CFS) is the common term for steel products shaped by cold-working processes carried out near room temperature, such as rolling, pressing, stamping, bending, etc. Stock bars and sheets of cold-rolled steel (CRS) are commonly used in all areas of manufacturing. The terms are opposed to hot-formed steel and hot-rolled steel.

<span class="mw-page-title-main">Wattle and daub</span> Building technique using woven wooden supports packed with clay or mud

Wattle and daub is a composite building method used for making walls and buildings, in which a woven lattice of wooden strips called "wattle" is "daubed" with a sticky material usually made of some combination of wet soil, clay, sand, animal dung and straw. Wattle and daub has been used for at least 6,000 years and is still an important construction method in many parts of the world. Many historic buildings include wattle and daub construction.

<span class="mw-page-title-main">American historic carpentry</span>

American historic carpentry is the historic methods with which wooden buildings were built in what is now the United States since European settlement. A number of methods were used to form the wooden walls and the types of structural carpentry are often defined by the wall, floor, and roof construction such as log, timber framed, balloon framed, or stacked plank. Some types of historic houses are called plank houses but plank house has several meanings which are discussed below. Roofs were almost always framed with wood, sometimes with timber roof trusses. Stone and brick buildings also have some wood framing for floors, interior walls and roofs.

<span class="mw-page-title-main">Fachwerk Farmhouse</span> Historic site in Queensland, Australia

Fachwerk Farmhouse is a heritage-listed farmhouse at 445 – 469 Beenleigh Redland Bay Rd, Carbrook, City of Logan, Queensland, Australia. It was built c. 1873 by August Von Senden. It is also known as Krugers Farm. It was added to the Queensland Heritage Register on 7 February 2005.

References

  1. 1 2 Fleming, Eric. Construction technology: an illustrated introduction. Oxford: Blackwell, 2005. 123, 160. Print.
  2. Loudon, J. C.. An encyclopaedia of cottage, farm, and villa architecture and furniture: containing numerous designs for dwellings, from the cottage to the villa, including farm houses, farmeries, and other agricultural buildings, several designs for country inns, public. London: Longman, Rees, Orme, Brown, Green & Longman, 1833. 39. Print.
  3. "Dwang" def. 1. Cryer, Max. The Godzone dictionary of favourite New Zealand words and phrases. Auckland [N.Z.: Exisle Pub., 2006. 62. Print.
  4. "Nogging". Free dictionary. Retrieved 1 January 2012.
  5. Coxhead, Averil; Parkinson, Jean; Mackay, James; McLaughlin, Emma (2019). English for Vocational Purposes: Language Use in Trades Education. Oxon: Routledge. ISBN   978-0-429-83216-1.
  6. Tolson, Simon (2014). Dictionary of Construction Terms. Oxon: Routledge. p. 267. ISBN   978-1-843-11794-0.
  7. Marshall, Duncan; Worthing, Derek; Dann, Nigel; Heath, Roger (2013). The Construction of Houses. Oxon: Routledge. p. 127. ISBN   978-0-415-53817-6.

See also