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Questioning the linear relationship between doorway width and achievable flow rate

Questioning the linear relationship between doorway width and achievable flow rate

Gwynne, S.M.V., Kuligowski, E.D., Kratchman, J. and Milke, J.A. (2008) Questioning the linear relationship between doorway width and achievable flow rate. Fire Safety Journal, 44 (1). pp. 80-87. ISSN 0379-7112 (doi:https://doi.org/10.1016/j.firesaf.2008.03.010)

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Abstract

This paper challenges the currently assumed linear relationship between doorway width and achievable flow. The current view is seen as a simplification that may lead to anoverly optimistic view of the achievable flowrates. Analyzed data are presented in order to demonstrate the impact that the actual use of the doorway and its design can have upon the flow rate generated. These data are then supported by the use of numerical simulations to demonstrate the impact that this overestimation can have upon the design process. It is contended that the specific flow rate assumed for a doorway should take into consideration not only its width, but also the design of the doorway (i.e., the opening and closing mechanism) and how evacuees behave in response to it. The issues raised have implications for the governing codes/regulations, engineering guidance and on the development of future computational egress models.

Item Type: Article
Uncontrolled Keywords: door, exit, doorway, flow rate, egress models, effective width, egress simulation, engineering analysis, egress analysis, means of egress
Subjects: Q Science > QA Mathematics
Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Pre-2014 Departments: School of Computing & Mathematical Sciences
School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis
School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Fire Safety Engineering Group
Related URLs:
Last Modified: 14 Oct 2016 09:15
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
URI: http://gala.gre.ac.uk/id/eprint/5806

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