European Conference on Cross Laminated Timber (CLT)
May 21-22, 2013, Graz, Austria
Cross-Laminated Timber (CLT) is an innovative wood product, which can be used for almost all superstructure elements. It is generally produced from kiln dried, fast growing timber. Currently the majority of CLT used within the UK construction industry is manufactured in central mainland Europe and imported to the UK. The goal of this study is to establish the conditions required for implementing a CLT production and construction capability using available UK timber stock, thus offering a low carbon alternative to multi-story steel and concrete commercial constructions.
Mass timber is a family of Solid Laminate Timber Systems (SLTS) formed from smaller sections of timber connected by glue, mechanical fixings, moisture movement or a combination of methods. These products, which include Structural Composite Lumber, GluLam, Cross Lam, Nail Lam and Dowel Lam (or Brettstapel), have over the past two decades seen an extraordinary upsurge in use internationally. This global phenomenon has been driven by a greater emphasis on the sustainable use of renewable resources and by significant technological developments in the manufacture of SLTS. This research paper considers the merits of each of these products, their manufacturing processes and the corresponding quality assurance requirements necessary for successful project delivery. The paper describes the advantages and barriers to the use of the mass timber and provides an overview of the various aspects to be considered during design for offsite and modular construction. The work presented also provides case studies of how these products have been researched and utilised into live projects in the UK utilising local resource resulting in the formation of new supply chain arrangements. The work further explains the advantages of the respective systems for the given application including information on species selection, connection systems employed and the necessary onsite and offsite management approaches deployed.