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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.
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 roof was commissioned for Richard II in 1393 and built by the royal carpenter, Hugh Herland. [2] It is the largest clearspan medieval roof in England, measuring 20.7 by 73.2 metres (68 by 240 ft). [3] [4] At the same time the rest of the hall was remodelled by the master mason Henry Yevele. [5]
The profile of the beams was gleaned from the shadowy remains on the plaster walls of the exact dimensions of the roof trusses. The spacing of trusses was established by the window spacing below. The kitchens were cleaned up and provided with new hammerbeam roofs clad externally in local slate.
A feature of the Great Hall is the sloped roof, built in hammerbeam style to resemble that of Westminster Hall in London. [3] The arched design of the roof is supported by six collar cedar beams, and is architecturally reminiscent of such British interiors as those of Stirling Castle , Hampton Court and Etham Castle, all equally typical of ...
The great hall, which has an interesting six-bay hammerbeam roof, and the chapel have been dated to 1485–1495. Later additions include an accommodation wing added in the early 16th century by Sir William Calverley to house his very large family.
The announcement provided no details on the size or budget of the venture beyond the leadership of Musk and Ramaswamy but said that the work will be completed by July 4, 2026.
A simple timber frame made of straight vertical and horizontal pieces with a common rafter roof without purlins. The term box frame is not well defined and has been used for any kind of framing (with the usual exception of cruck framing). The distinction presented here is that the roof load is carried by the exterior walls.