Updated Worldwide Structural Survey of Built Multi-Storey Timber-Based Buildings (5–25 Storeys)

Summary
This study provides a comprehensive analysis of 103 multi-storey timber-based buildings completed globally between 2020 and 2022, expanding on previous research that analysed 197 buildings constructed from 2004 to 2019. The report highlights trends, structural categories, and geographical differences in the adoption of timber for mid-rise and high-rise buildings. It examines hybrid and all-timber structural solutions, their evolution, and their alignment with sustainable construction practices.

Key Takeaways
1. Trends in Building Height: Mid-rise projects (5–7 storeys) remain dominant, accounting for 74% of new builds, with high-rise projects (8+ storeys) growing steadily.
2. Hybrid Structures: The majority of new projects incorporate hybrid timber-concrete or timber-steel solutions, reflecting an increase in structural innovation.
3. Geographical Insights: France and Germany lead in adopting panelised timber-concrete systems, while other regions such as the US are exploring modular and hybrid designs.

How It Can Help You
This study is valuable for architects, engineers, and policymakers who are:
• Seeking data on global trends and practices in multi-storey timber-based construction.
• Exploring hybrid and biobased materials for sustainable and resilient building designs.
• Interested in understanding regional differences in timber construction methods.

Key Learnings
1. Timber as a Core Material: Biobased materials such as timber play a central role in reducing embodied carbon and fostering sustainable building practices.
2. Evolution of Structural Systems: Innovations in panelised and post-and-beam configurations are driving adaptability for various building heights and uses.
3. Regional Influence: Policy frameworks and market conditions significantly influence the adoption of specific timber construction techniques.