Graphical Construction Glossary >> Roofs and roofing. >> Roof Trusses >> Jointed cruck

Jointed Cruck

A cruck with joints to the main members. To extend the length of the timbers or alter the shapes.

Upper cruck truss.

The upper blades are sat on a tie beam and raise to the ridge.

Base cruck

The cruck blades sit at ground level and rase to be joined to a tie or collar beam.

There is a huge varity in the design of many of these early roof trusses, with a lot of it being regional.

For instance parts of North East England up to the 11th century were building roofs that had more in common with dwelling in the counties around the Baltic sea rather than other parts of England

In the middle ages there was a great cross fertilisation of ideas and methods as builders craftsmen and moved around Europe.

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