Fire Safe Design of Mass Timber Buildings

Summary
This guide, developed by Arup, provides comprehensive methodologies and recommendations for the fire-safe design of mass timber buildings. It focuses on structural fire resistance, evacuation safety, and strategies for mitigating risks associated with exposed mass timber. The guide is tailored for fire safety engineers, architects, and construction professionals to ensure regulatory compliance while addressing the unique challenges posed by mass timber’s combustibility and sustainability advantages.

Key Takeaways
1. Risk-Based Methodology: A systematic approach assesses fire safety goals based on building use, height, and evacuation strategies.
2. Fire Dynamics and Structural Integrity: The guide emphasises designing for fire resistance and managing fire growth within compartments to prevent collapse.
3. Timber-Specific Challenges: Addresses the impact of exposed mass timber on fire dynamics, including heat release rates and smouldering hazards.

How It Can Help You
This guide is essential for professionals who are:
• Designing mass timber buildings and seeking to mitigate fire risks while meeting safety standards.
• Interested in incorporating timber into commercial, residential, or educational projects without compromising safety.
• Looking for robust, data-driven methodologies to navigate the complexities of timber fire performance.

Key Learnings
1. Managing Fire Spread: Encapsulation techniques and strategic fire barriers limit the contribution of mass timber to fire fuel loads.
2. Structural Fire Resistance: Timber’s charring properties provide insulation but require careful assessment to prevent structural failure.
3. Collaborative Design Approach: Early involvement of insurers, engineers, and fire safety consultants ensures balanced risk mitigation and regulatory compliance.