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System building
Published in Duncan Marshall, Derek Worthing, Roger Heath, Nigel Dann, Understanding Housing Defects, 2013
Duncan Marshall, Derek Worthing, Roger Heath, Nigel Dann
One of the advantages of timber framing is the ease of connecting the various timber elements. As long as the timbers are nailed in accordance with the appropriate specification, structural integrity will be assured. In some instances, however, connections such as simple nailing are ineffective because they have been carried out carelessly. Mistakes on site such as wall tie fixing nails passing through the sheathing layer but missing the stud framing have been observed. Reports have also revealed that similar poor connections have occurred in the factory.
Lessons from Structural Analysis of a Great Gothic Cathedral: Canterbury Cathedral as a Case Study
Published in International Journal of Architectural Heritage, 2021
Georgios Karanikoloudis, Paulo B. Lourenço, Leslie E. Alejo, Nuno Mendes
The nave roof is a classic high-pitched Gothic roof of about 54°, with a covering span of 11.1 m. The timber trusses, placed with a spacing of 3.5 m and fixed over timber wall plates, form a rigid timber framing system with hinged joints of timber connections and metallic-edged blades. They are configured of a queen post on the lower level and a king post over the level of the straining beam, along with a series of struts (Figure 7a). The whole system appears structurally independent of the nave vaults and extends over the extrados of the vaults by 0.8 m. The roof of the lateral aisles is single pitched of about 8°, with a covering span of 5.0 m. and a spacing of 2.7 m (centre axis) (Figure 7b). On the side of the buttresses, the tie beams rest on wall plates, along with an adjoining post and curved brace timber elements, fixed on a small cantilever, that counteract the bending and vertical forces. From the inner side, the tie beams and principal rafters are attached separately to the walls of the triforium. The external roof coatings in both the nave and lateral aisles are large size lead sheets, attached on a system of timber roof battens.