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Practical Tools
Some great new and updated tools and resources are available to assist specifiers, designers and builders with regulatory challenges.Order them free at:
www.timber.org.au/guides
Timber Construction in Bushfire Prone Areas
3000
3500
4000
4500
5000
Major insurance losses [today’s cost ($x106)]1967 – 2010 (Source ICA)
0
500
1000
1500
2000
2500
3000
Vic NSW/ACT TAS SA WA QLD NT
Bushfire
Cyclone
Table of contents1. AS 3959 - 2009 allows the use of timber frames and construction materials
2. Understanding key requirements
3. Understanding the Bushfire Attack Levels
4. What timbers can we use?
5. Construction requirements
• BAL–LOW
• BAL–12.5
• BAL–19
• BAL–29
• BAL–40
• BAL–FZ
6. Bushfire flame zone resistant sheet metal roofs
Resistant timbers
BAL Requirements
BAL Requirements
Construction Details
Construction Details
Construction Details
Construction Details
BAL - FZ
Timber in Bushfire Prone Areas
Getting to ‘6 Star’ with Timber
• Deck/Outdoor living area and Photo-voltaics
• Don’t forget to consider all options including Verification vs Reference Building, particularly Climate Zones 1 and 2. No heating load.
• Insulation solutions available for timber floors, ‘I’ joists can • Insulation solutions available for timber floors, ‘I’ joists can
help installation where high R Ratings required.
• If all else fails and you know it’s the right solution in lightweight – Use the Peer Review option which can take account of external non-current BCA considerations such as embodied energy, sloping sites etc.
R Ratings Floors, Walls and Roofs
R Ratings Floors, Walls and Roofs
R Ratings - Floors
Available Products
Calculated with R-Flor calculator Version 2007-V3.0c
Flooring Type Heat Flow
Down Up
Sub-floor
enclosed
Bare timber
(structaflor)
1.10 0.97
R-Flor 1.71 1.09
Flooring Type Heat Flow
Down Up
Sub-floor enclosed,
ground sealed
Bare timber
(structaflor)
1.20 1.06
R-Flor 1.80 1.19
R-Flor Carpeted 2.11 1.50
Open sub-floor
Bare timber
(structaflor)
0.51 0.39
R-Flor 1.12 0.52
R-Flor Carpeted 1.52 0.92
R-Flor Carpeted 2.20 1.59
Note: Ground sealed with impervious membrane,
see BCA Vol 2, Part 3.4.1
MRTFC and Timber in Commercial Construction
Table of ContentsIntroduction
1 High-Level BCA Design Issues
2 Define Sound Design Requirements
3 Improve and Upgrade Sound Performance
4 Define BCA Fire-Design Requirements
5 Selecting Sound- and Fire-Rated Timber Construction
Systems
6 Further Design Assistance (Appendices) 6 Further Design Assistance (Appendices)
Appendix A – Resolving Structural Design
Considerations and Construction Practices
Appendix B – Design References
Appendix C – Glossary of Terms
Class 1a
Class 1a
Improving Sound Performance
Fire Rated Construction Details
Fire Rated Construction Details
Fire Rated Construction Details
Fire Rated Construction Details
Table of ContentsIntroduction
1 High-Level BCA Design Issues
2 Define Sound Design Requirements
3 Improve and Upgrade Sound Performance
4 Define BCA Fire-Design Requirements
5 Selecting Sound- and Fire-Rated Timber Construction
Systems
6 Further Design Assistance (Appendices) 6 Further Design Assistance (Appendices)
Appendix A – Resolving Structural Design
Considerations and Construction Practices
Appendix B – Design References
Appendix C – Glossary of Terms
Class 2, 3 and 9c
• Similar details and guidance to Class 1a, but more:-
– sound ratings for floors/ceilings
– service ducts– service ducts
– increased FRL’s etc
Improving Sound Performance
Fire Rated Construction Details
Additional Details for Services
Commercial BuildingsIntroduction
1 High-Level BCA Design Issues
2 Define BCA Fire-Design Requirements
3 Selecting Fire-Rated Timber Construction Systems
4 Further Design Assistance (Appendices)
Reports
