Hammer Beam Roof Structure

2 the hammer beam joins into the hammer post instead of the hammer post landing on the hammer beam.

Hammer beam roof structure.

Herland s experience at winchester in the early 1390s. We usually use the hammer beam itself as a robust bending member as the hammer post vertical and brace into the post go into significant compression. For any would be castle builder a great hall is probably on the wish list to be built as part of the structure and having a hammer beam type roof over the room is probably part of the design. There are many ways to embellish this design from through tenons and radius cuts to decorative pendants or finials.

It uses reinforced posts curving slightly outward from the wall to support the weight. A hammer beam truss is a cathedral roof truss with an open center. Hammer beam trusses can have a single hammerbeam or multiple hammerbeams. A false hammerbeam roof truss has two definitions.

1 there is no hammer post on the hammer beam 16 17 as sometimes found in a type of arch brace truss 18 or. A true hammer beam truss like the one shown here relies on exterior buttresses reminiscent of the flying buttresses of notre dame cathedral to hold it in place and keep the roof planes from spreading apart. This analysis is based on drawings made in 1913 to facilitate the repair of the roof and on the author s archaeological reconstruction of the carpentry based on those drawings. The hammer beam bent is often associated with religious structures great halls or great rooms.

A hammer beam timber frame bent pictured above is a beautiful and more complicated design and creates dramatic vaulted spaces. I learned recently that these structures in an open timber roof are called hammer beam type roofs. Diagram of a hammerbeam roof hammerbeam roof systems developed in english architecture in the medieval period. 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 hammer beam is the short beam at the base that attaches to the wall. The structure a hammer beam roof is analysed from the perspective of the king s carpenter hugh herland. The hammer beam roof is the crowning achievement in english gothic architecture and open timber roof design. Hammer beam roof english medieval timber roof system used when a long span was needed.