Some projects really bring home the depth and extent of a true craftsman’s knowledge and skill- and these two roundel roofs currently being cut in our Scottish timber framing yard and destined for a new house being built in Newcastle are perfect examples of this.
The complex geometry and joinery involved is hard enough to draw let alone to actually cut to such accurate tolerences; and this is what sets a truly hand crafted timber frame apart from a machine manufactured product or from other mass produced items.
The main structure for the two roofs comes from two trusses joined through a central boss in the shape of a cross in plan. A series of purlins links between the four principal rafters. These purlins support two smaller principal rafters cogged over the purlins in each of the four segments of the cross. Another row of curved purlins further down the plane of the roof links all the principals together. The rafter feet are bound at the eaves by a steel ring beam.
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