Hammerbeam roof - In architecture, it is the name given to a Gothic open timber roof, of which the finest example is that over Westminster Hall (1395-1399).
hammerbeam: type of roof construction in which the braces rest on cantilevered beams supported on brackets.
herm: a pier ending in a head or bust, often a female figure used as a support.
Hammerbeam roof
late-medieval form of roof supported on horizontal beams (hammerbeams) projecting from the walls; it enabled the central span of the roof to be open
Heraldry ...
In a hammerbeam roof, vertical timbers between the hammerbeams (horizontal brackets projecting at wall-plate level) and the purlins (horizontal longitudinal timbers); braced to a collar-beam above.
- a hammerbeam is a horizontal timber projecting at wall head level towards the centre of the roofspace, like a tie beam without a central section.
The Palais des Papes in Avignon is the best complete large royal palace, with partial survivals in the great hall at the Palace of Westminster, London, an 11th-century hall renovated in the late 1300s with gothic windows and a wooden hammerbeam roof, ...
 See also: Timber, Brace, Church, Beam, Hall
  
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