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The hammerbeam roof was the culmination of the development of the arch-braced truss, allowing greater spaces to be spanned. The hammerbeam roof of Westminster Hall in London, designed by Hugh Herland and installed between 1395 and 1399, was the largest timber-roofed space in medieval Europe, spanning a distance of just over 20 metres (66 ft ...
The Burr Arch Truss—or, simply, Burr Truss or Burr Arch—is a combination of an arch and a multiple kingpost truss design. It was invented in 1804 by Theodore Burr , [ 1 ] patented on April 3, 1817, [ 2 ] and used in bridges , usually covered bridges .
A hammer-beam is a form of timber roof truss, allowing a hammerbeam roof to span greater than the length of any individual piece of timber.In place of a normal tie beam spanning the entire width of the roof, short beams – the hammer beams – are supported by curved braces from the wall, and hammer posts or arch-braces are built on top to support the rafters and typically a collar beam.
Barrel, barrel-arched (cradle, wagon): A round roof like a barrel (tunnel) vault. Catenary: An arched roof in the form of a catenary curve. Arched roof, bow roof, [11] Gothic, Gothic arch, and ship's bottom roof. Historically also called a compass roof. [12] [13] Circular Bell roof (bell-shaped, ogee, Philibert de l'Orme roof): A bell-shaped roof.
George Obendorf Gothic Arch Truss Barn, built from Sears Roebuck parts, in Idaho. A Gothic-arched roof barn or Gothic-arch barn or Gothic barn or rainbow arch [1] is a barn whose profile is in the ogival shape of a Gothic arch. These became economically feasible when arch members could be formed by a lamination process.
The list of ancient roofs comprises roof constructions from Greek and Roman architecture, ordered by clear span. Roof constructions increased in clear span as Greek and Roman engineering improved. Most buildings in classical Greece were covered by traditional prop-and-lintel constructions, which often required interior colonnades for support.
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