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A numerical comparison of protective measures against external fire spread

Nilsson, Markus; Husted, Bjarne LU ; Mossberg, Axel LU ; Anderson, Johan and Mcnamee, Robert Jansson (2018) In Fire and Materials
Abstract

The impact of different passive protective measures against external vertical fire spread was investigated using the numerical tool Fire Dynamics Simulator (FDS). The numerical study was divided into a validation study and a comparative analysis. The validation study was performed to evaluate FDS as a calculation tool for modelling external vertical fire spread and was conducted using experimental results from a large-scale fire test done on a SP FIRE 105 test rig at SP, Sweden. It was concluded that FDS 6.2.0 could reproduce the experimental results with a reasonable level of detail. In the comparative analysis, the impact on the external fire from a smaller apartment was studied in FDS with different configurations of horizontal... (More)

The impact of different passive protective measures against external vertical fire spread was investigated using the numerical tool Fire Dynamics Simulator (FDS). The numerical study was divided into a validation study and a comparative analysis. The validation study was performed to evaluate FDS as a calculation tool for modelling external vertical fire spread and was conducted using experimental results from a large-scale fire test done on a SP FIRE 105 test rig at SP, Sweden. It was concluded that FDS 6.2.0 could reproduce the experimental results with a reasonable level of detail. In the comparative analysis, the impact on the external fire from a smaller apartment was studied in FDS with different configurations of horizontal projections and spandrels in the building exterior. Also, the effects of an upper and lower facade set-back configuration were studied. The results show that facade solutions based on a horizontal projection or an upper facade set-back configuration result in comparable or better protection compared with a defined spandrel height. The results also show that a spandrel height of at least 1.2 m can be replaced by a 60-cm-deep horizontal projection, given that the balcony is wider than the underlying opening.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
External fire spread, Facade set-back, FDS, Fire safety engineering, Horizontal projection, Spandrel
in
Fire and Materials
publisher
John Wiley & Sons
external identifiers
  • scopus:85046129786
ISSN
0308-0501
DOI
10.1002/fam.2527
language
English
LU publication?
yes
id
df3e15c2-9475-4e0e-9ae0-27c16bd2ccd2
date added to LUP
2018-05-16 13:16:09
date last changed
2018-05-22 16:28:41
@article{df3e15c2-9475-4e0e-9ae0-27c16bd2ccd2,
  abstract     = {<p>The impact of different passive protective measures against external vertical fire spread was investigated using the numerical tool Fire Dynamics Simulator (FDS). The numerical study was divided into a validation study and a comparative analysis. The validation study was performed to evaluate FDS as a calculation tool for modelling external vertical fire spread and was conducted using experimental results from a large-scale fire test done on a SP FIRE 105 test rig at SP, Sweden. It was concluded that FDS 6.2.0 could reproduce the experimental results with a reasonable level of detail. In the comparative analysis, the impact on the external fire from a smaller apartment was studied in FDS with different configurations of horizontal projections and spandrels in the building exterior. Also, the effects of an upper and lower facade set-back configuration were studied. The results show that facade solutions based on a horizontal projection or an upper facade set-back configuration result in comparable or better protection compared with a defined spandrel height. The results also show that a spandrel height of at least 1.2 m can be replaced by a 60-cm-deep horizontal projection, given that the balcony is wider than the underlying opening.</p>},
  author       = {Nilsson, Markus and Husted, Bjarne and Mossberg, Axel and Anderson, Johan and Mcnamee, Robert Jansson},
  issn         = {0308-0501},
  keyword      = {External fire spread,Facade set-back,FDS,Fire safety engineering,Horizontal projection,Spandrel},
  language     = {eng},
  month        = {01},
  publisher    = {John Wiley & Sons},
  series       = {Fire and Materials},
  title        = {A numerical comparison of protective measures against external fire spread},
  url          = {http://dx.doi.org/10.1002/fam.2527},
  year         = {2018},
}