Structural Performance of Prefabricated CLT Wooden Modules

Abstract

This thesis focused on the study of prefabricated modular houses made from cross-laminated timber (CLT), with a specific emphasis on their connection systems and environmental performance. The aim was to review the use of CLT in modular construction, examine typical joint types, explore innovations in connections, and assess the life cycle impact (LCA) of CLT-based systems. The research was conducted through a literature review and the analysis of recent European case studies: one multi-unit residential project. Methods included examining project documentation, technical articles, and academic sources. The study reviewed the structural use of CLT panels and common fasteners such as metal brackets and dowels, along with newer joint technologies like interlocking connections. Environmental aspects, including material efficiency and life cycle assessment data, were also considered. The results indicated that CLT modular construction provides good structural integrity, efficient construction processes, and a reduced environmental footprint. The findings support the growing relevance of CLT modular systems as a practical and sustainable choice for residential construction.