Methods for creating CLT Construction Guidelines

Abstract

During the past decade, the use of Cross-Laminated Timber (CLT) elements has become gradually more popular and widespread in building construction in Norway. A study mapping the experience of CLT use in the Norwegian construction industry reveals that existing domestic literature on this topic is outdated and no longer relevant. This paper describes the methods used for preparing updated CLT construction guidelines. Information obtained from expert actors in the construction industry, combined with document studies, has formed the knowledge basis for this study. A total of 19 qualitative in-depth interviews were conducted, and more than 400 documents from 12 CLT projects were received from 11 actors. A CLT construction guide focusing on moisture safety design and rational production was prepared based on the information obtained, and was quality assured by 16 experts from industry and the research community. Guidance on the approach to preparation of the guide, its format and layout, was provided by SINTEF Science Communication. Critical feedback influenced the content of the guide and its design recommendations. The study shows that dialogue with the construction industry and research community is a valuable contribution to the preparation of structured construction solutions. The involvement of the industry has accentuated the importance of the preparation of CLT construction guidelines. It is hoped that the guide will inspire research institutions to prepare and publish updated guidelines.