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Last edited 24 Aug 2021
The older part of St Edmundsbury Cathedral has a mediaeval hammerbeam roof ornamented with figures of 30 angels. The roof is boldly painted and gilded; the figures on the hammerbeams were painted in 1948, whilst the rest of the roof was coloured in 1982. Decorating the ceiling in this way was used to link the nave with the modern extension.
Pevsner’s Architectural Glossary (second edition) was published by Yale University Press in 2018. It defines a hammerbeam roof (or hammer-beam roof) as a structure with: ‘horizontal brackets projecting at the wall-plate level like an interrupted tie beam; the inner ends carry hammerposts, which are vertical timbers that support a purlin (or horizontal longitudinal timber) and are braced to a collar-beam above.’
Primarily used as a type of roofing support, a hammerbeam roof permits the support structure to extend beyond the length of the original piece of timber. This method may be more time consuming to construct, but it can be less expensive since it does not require long pieces of timber.
Tie beams are typically put in place to support this method of construction. The short pieces of timber that project from the wall and serve to anchor the tie beams are sometimes referred to as hammer-beams.
Hammerbeam roofs are often highly decorated. This technique was widely used during the English Gothic architecture period.
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