mass timber fire safety...mass timber fire safety robert gerard, pe holmes fire, san francisco...
TRANSCRIPT
Mass Timber Fire SafetyRobert Gerard, PE
Holmes Fire, San Francisco
2017 IMUA Annual Meeting
Agenda
• Fire performance
• Fire risks
• Emerging trends
Challenging Perceptions
Fire Performance
• Non-combustible• Steel
• Concrete
• Combustible• Light timber
• Heavy timber
• Mass timber
Fire Performance
• Combustible• Light timber
• Type V
• Low-/mid-rise
• Residential
• Office
Fire Performance
• Combustible• Heavy timber
• Types III-IV
• Low-/mid-rise
• Residential
• Office
Fire Performance
• Combustible• Mass timber
• Types III-IV
• Type I Alt
• Mid-/high-rise
• Residential
• Office
Fire Performance
• Ignition
Fire Performance
• Ignition• High energy
• Surface area
• Re-radiation
Fire Performance
• Charring• Self-protecting
• Predictable
• ~1.5” / hr
Fire Performance
• Charring• Self-protecting
• Predictable
• ~1.5” / hr
Fire Performance
• Burnout
Fire Performance
• Burnout
Fire Performance
• Post-fire
Fire Performance
• Post-fire
Fire Risks
• Building life cycle• Occupied buildings
• Construction• 0.8% of all fires
• 0.2% of all deaths
• 1.8% of property damage
Campbell, Fires in Structures Under Construction…, 2010-2014, NFPA, April 2017
Fire Risks
• Construction fires• Cooking equipment (27%)
• Heating equipment (13%)
• Intentional (13%)
• Torch, burner, soldering (6%)
• Smoking (5%)
Campbell, Fires in Structures Under Construction…, NFPA, April 2017
Fire Risks
• Mass timber construction• No hot works
• No significant combustible fuel
• No re-radiation
• Rapid construction
Fire Risks
• Construction fires• Site safety plan
• Charged standpipes
• No more than 6 levels exposed
Fire Risks
• Timber construction
Fire Risks
• Loss potential
Emerging Trends
• Research and testing
Emerging Trends
• Research and testing
Tests Agency
Building components testing (ASTM E119)
FPI / NRC / SWRI / EU
Connections FPI / NRC / EU
Penetrations / assemblies FPI / NRC / SWRI / UL
Shaft Demonst. Proj. NRC / CNRC
Fire Resistance Demonst. Proj. NIST / ATF
Emerging Trends
• Structural fire design
Emerging Trends
• Building design
Emerging Trends
• Building design
Emerging Trends
• Building design
Emerging Trends
• Building design
Emerging Trends
• Building design
Emerging Trends
• Building codes• 2015 IBC
• Tall Wood Committee
Challenging Perceptions
