This presentation demonstrates how the fire performance requirements in the Building Code of Australia (BCA) for Class 1a, Class 2, 3 & 9c as well as Class 5,6 9a & 9b buildings can be met. In this context, the presentation provides verified construction details that utilise the BCA's deemed-to-satisfy provisions.
1. Fire Safety and Performance of Wood In Multi-Residential and Commercial Buildings
2. Learn more about wood at UTAS Centre for Sustainable Architecture with Wood Graduate Certificate in Timber (Processing & Building) 4 units, part time, online Areas covered include: Wood science Design for durability and service for life Timber as a renewable resource Sustainable design and construction Engineered wood products International technologies and developments Plus, selected topics of individual interest More information: Associate Professor Greg Nolan (03) 6324 4478 or enquiries@arch.utas.edu.auwww.csaw.utas.edu.au
3. Learning Objectives After this presentation you should be able to: Identify which Fire Hazard Properties apply in various situations Understand how to use timber in multi-residential and commercial buildings Outline the effectiveness of timber members and timber connections during fire For architects - AACA Competencies: Design Documentation
4. This Presentation Fire Hazard Properties Specification C1.10 Specification C1.10a MRTFC and Commercial Buildings Overview Timber properties during fire Connection performance during fire Calculation methods to predict timber capacity
6. Topics Fire Hazard Properties Clause C 1.10: Specification C1.10 Clause: C1.10: Specification C1.10a MRTFC and Commercial Buildings Overview Timber properties during fire Connection performance during fire Calculation methods to predict timber capacity
11. Paints, varnishes, etc. or adhesivesyes No requirements no Covering - Floor, Wall & Ceiling Other Specification C1.10 Specification C1.10a
12. Specification C1.10 Specification C1.10 Materials1? All other materials, including timber sarking Flammability Index ≤ 5 Spread-of-Flame Index ≤ 9 and Smoke-Developed Index2 ≤ 8 1 Additional requirements apply to fire isolated exits, public entertainment theaters, public halls etc. refer to BCA for details 2 Only for materials with a Spread-of-Flame Index > 5
13. Specification C1.10 – Fire Hazard Properties of Timber More species can be found on: www.woodsolutions.com.au
14. Topics Fire Hazard Properties Clause C1.10: Specification C1.10 Clause C1.10: Specification C1.10a MRTFC and Commercial Buildings Overview Timber properties during fire Connection performance during fire Calculation methods to predict timber capacity
19. Paints, varnishes, etc. or adhesivesyes No requirements no Coverings - Floor, Wall & Ceiling Other Specification C1.10 Specification C1.10a
20. Specification C1.10a Specification C1.10a Wall / Ceiling Floor Lift Sprinklered? yes no Critical Radiant Flux Critical Radiant Flux and Smoke Development Rate ≤ 750 percent minutes
21. Specification C 1.10a: Floors -Fire Hazard Properties of Timber More species can be found on: www.woodsolutions.com.au
22. Specification C1.10a Specification C1.10a Wall / Ceiling Floor Lift Sprinklered? Sprinklered? yes no yes no Group Number Critical Radiant Flux Critical Radiant Flux and Smoke Development Rate ≤ 750 percent minutes Group Number and smoke growth rate index or average specific extinction area < 250 m²/kg
23. Specification C 1.10a: Walls / Ceiling Fire Hazard Properties of Timber More species can be found on: www.woodsolutions.com.au
24. Clause Specification C1.10a: Lifts Specification C1.10a Wall / Ceiling Floor Lift Floor, Wall/Ceiling? Sprinklered? Sprinklered? yes no yes no floor wall/ceiling Group Number Critical Radiant Flux Critical Radiant Flux and Smoke Development Rate ≤ 750 percent minutes Group Number and smoke growth rate index or average specific extinction area < 250 m²/kg Critical Radiant Flux ≥ 2.2 kW/m² Group Number 1 or 2
25. Topics Fire Hazard Properties Specification C1.10 Specification C1.10a MRTFC and Commercial Buildings Overview Timber properties during fire Connection performance during fire Calculation methods to predict timber capacity
26. MRTFC - Overview – Multi – Residential – Timber –Frame –Construction M R T F C
67. The joint is made by adding extra pieces of timber to the joint between the elements
68. The extra timber adds fire resistance because when it burns it forms an insulative char layer on the surface – this slows burning in the core of the timber and in doing so provides fire resistance for a period of time
69. In general, the more pieces of timber added to the joint, the longer the joint will last.
76. Light gauge steel profiles Cavity barrier using sheet lining Example prior to brick veneer being laid
77. Fire Rated Shafts Use fire shafts to avoid services in fire/sound rated walls
78. Topics Fire Hazard Properties Specification C1.10 Specification C1.10a MRTFC and Commercial Buildings Overview Timber properties during fire Connection performance during fire Calculation methods to predict timber capacity
95. Timber can be effectively used in buildings that are exposed to fire The key to the correct use of timber is detailing in accordance with relevant Australian standards and industry manuals (e.g. Timber Design Guides) Conclusions