hammer-beam roof

hammer-beam roof
English medieval timber roof system used when a long span was needed.

Not a true truss, the construction is similar to corbeled masonry (see corbel) in that each set of beams steps upward (and inward) by resting on the ones below by means of curved braces and struts. The roof of Richard II's Westminster Hall in London (1402), with a 70-ft (21-m) span, is an excellent example.

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  • Hammer-beam — Ham mer beam ( b[=e]m ), n. (Gothic Arch.) A member of one description of roof truss, called hammer beam truss, which is so framed as not to have a tiebeam at the top of the wall. Each principal has two hammer beams, which occupy the situation,… …   The Collaborative International Dictionary of English

  • hammer beam — noun : either of the short horizontal beams or cantilevers projecting from the top of a pair of opposite walls to support a roof principal for a Gothic roof and thus dispense with the necessity for a tie beam * * * hammer beam noun A horizontal… …   Useful english dictionary

  • Hammer-Beam — ♦ Roof bracket projecting at wall plate level; a pair resemble a tie beam with its centre omitted; there may be a second (and third) series of these above. (Wood, Margaret. The English Medieval House, 412) …   Medieval glossary

  • roof — rooflike, adj. /roohf, roof/, n., pl. roofs, v. n. 1. the external upper covering of a house or other building. 2. a frame for supporting this: an open timbered roof. 3. the highest part or summit: The Himalayas are the roof of the world. 4.… …   Universalium

  • hammer — hammerable, adj. hammerer, n. hammerlike, adj. /ham euhr/, n. 1. a tool consisting of a solid head, usually of metal, set crosswise on a handle, used for beating metals, driving nails, etc. 2. any of various instruments or devices resembling this …   Universalium

  • Hammer — /ham euhr/, n. Armand, 1898 1990, U.S. businessman and art patron. * * * I Tool for pounding or delivering repeated blows. Hand hammers have a handle and striking head. Surfaces of hammerheads vary in size, angle of orientation to the handle… …   Universalium

  • Roof construction — This article is about house construction that consists of beams and an outer weatherproof skin, as found on most domestic architecture. Such roofs may take a number of different shapes. Construction of a ridged roofA simple ridged roof consists… …   Wikipedia

  • Hammerbeam roof — Westminster Hall in the early 19th century …   Wikipedia

  • Domestic roof construction — Main article: Roof Section through a house roof showing names for parts of the structure. (UK and Australia) This article is about the type of roof construction that consists of footings and an outer weatherproof skin, as found on most domestic… …   Wikipedia

  • building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …   Universalium

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