SFPE Webinar: External Fire Spread - A Risk Based Approach
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 Export to Your Calendar 9/24/2020
When: 09/24/2020
2:00 PM
Where: GoToWebinar
United States
Contact: Maggie Mojab

Online registration is available until: 9/24/2020
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External Fire Spread - A Risk Based Approach

Presented by: Kieran Ager, MSc, P.Eng, CEng, MIFireE, CFPS, PMSFPE, Vancouver and Calgary Director, Jensen Hughes

The requirement to protect buildings from fires in adjacent structures is not a new concept. It was recognised that to prevent large conflagrations, or even the loss of entire communities, a restriction in combustible building materials and / or distance between structures was a requisite. The methodology for which to establish safe separation distances and maximum permissible unprotected openings is typically adopted in a deterministic tabular form within codes. This is a simplified method that is underpinned by assumptions of predicted fire behaviour and premised on temperatures and emitting heat flux borne from historical fire data and limited fire testing. Since the inception of the tabular form of spatial separation, little has varied over the years despite the increased research and subsequent understanding of compartment fire dynamics. The consequence of the lack of evolution is that the estimated heat flux emitted from elevations is likely over predicted that is further compounded by inherent assumptions. The burden of protecting against unrealistic risk is borne through construction cost and the over prescription of protective materials.

The webinar presents the historical basis, assumptions and underpinning rationale for which spatial separation analysis that underpins both the UK and Canada methodologies. These are then evaluated against the latest research and understanding of large compartment fire dynamics to which potential alternative risk based spatial separation methodologies are posed and discussed.


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