Reuse: Guideline on the Assessment of the technical integrity of disassembled timber members

The transition towards a circular construction sector necessitates the safe and regulated reuse of structural timber products. Ensuring the technical integrity of disassembled timber members is crucial to fostering confidence in their reuse. This paper presents key findings and methodologies for assessing the mechanical properties of reclaimed timber members, emphasizing non-destructive testing (NDT) techniques. The result of this research is a comprehensive guideline for evaluating used timber members towards their second structural life. Additionally, it introduces classification methods and adapted design approaches to account for prior load history. By establishing a structured framework for the reuse of timber members, this research aims to contribute to the advancement of sustainable construction practices and the broader adoption of circular economy principles in the timber industry.