국제초고층학회논문집 (International Journal of High-Rise Buildings)

  • 제10권4호
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  • Pages.299-310
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  • 2021
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  • 2234-7224(pISSN)
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  • 2288-9930(eISSN)
한국초고층도시건축학회 (Council on Tall Building and Urban Habitat Korea)
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Upward Flame Spread for Fire Risk Classification of High-Rise Buildings

  • McLaggan, Martyn S. (School of Civil Engineering, The University of Queensland) ;
  • Gupta, Vinny (School of Civil Engineering, The University of Queensland) ;
  • Hidalgo, Juan P. (School of Civil Engineering, The University of Queensland) ;
  • Torero, Jose L. (Department of Civil, Environmental & Geomatic Engineering, UCL)
  • 발행 : 2021.12.01
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초록

External fire spread has the potential to breach vertical compartmentation and violate the fire safety strategy of a building. The traditional design solution to this has been the use of non-combustible materials and spandrel panels but recent audits show that combustible materials are widespread and included in highly complex systems. Furthermore, most jurisdictions no longer require detailing of spandrel panels under many different circumstances. These buildings require rapid investigation using rational scientific methods to be able to adequately classify the fire risk. In this work, we use an extensive experimental campaign of material-scale data to explore the critical parameters driving upward flame spread. Two criteria are outlined using two different approaches. The first evaluates the time to ignition and the time to burnout to assess the ability for a fire to spread, and can be easily determined using traditional means. The second evaluates the preheated flame length as the critical parameter driving flame spread. A wide range of cladding materials are ranked according to these criteria to show their potential propensity to flame spread. From this, designers can use conservative approaches to perform fire risk assessments for buildings with combustible materials or can be used to aid decision-making. Precise estimates of flame spread rates within complex façade systems are not achievable with the current level of knowledge and will require a substantial amount of work to make progress.

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과제정보

This work has been developed using resources from the Material Library of Cladding Materials (Grant No. 2018001361) funded by the Queensland Government - Department of Housing and Public Works. Support from the Queensland Building & Construction Commission and Queensland Fire & Emergency Services as part of the Safer Buildings Taskforce is also gratefully acknowledged. All those who worked on the project as well as other members of UQ Fire are thanked. Dr Tuula Hakkarainen (VTT, Finland) is thanked for helping source literature.

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