Effective factors on the performance of woven wire screens against leaf firebrand attacks

Hashempour, Javad and Sharifian, Ahmad (2017) Effective factors on the performance of woven wire screens against leaf firebrand attacks. Journal of Fire Sciences, 35 (4). pp. 303-316. ISSN 0734-9041

Abstract

Firebrand spotting is the dominant wildfire propagation mechanism. The use of wire screens to prevent firebrand entry into structures is recommended or mandated by many standards. The existing standards address only one feature of screens which is opening size. This experimental study aims to explore several other factors that may influence the performance of wire screens and may need to be incorporated in codes and standards development process for structures located in wildfire prone areas. The results demonstrate a previously unreported shattering mechanism in the case of Eucalyptus populnea (from the Myrtle family) leaf firebrands under a moderate wind speed of 14.5 m/s. The results also show that screen porosity, screen type and wind speed would be appropriate to be addressed in developing standards, but there is no need for concern about screen orientation as long as the screen is placed perpendicular to the wind direction during the experiment.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published online 24/05/17. Permanent restricted access to ArticleFirst version in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 12 Nov 2017 23:10
Last Modified: 11 Apr 2018 05:57
Uncontrolled Keywords: wire screen; firebrand shower; wildland fire; WUI; building standard; eucalyptus firebrand
Fields of Research : 05 Environmental Sciences > 0502 Environmental Science and Management > 050204 Environmental Impact Assessment
09 Engineering > 0913 Mechanical Engineering > 091399 Mechanical Engineering not elsewhere classified
05 Environmental Sciences > 0502 Environmental Science and Management > 050299 Environmental Science and Management not elsewhere classified
07 Agricultural and Veterinary Sciences > 0705 Forestry Sciences > 070503 Forestry Fire Management
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
E Expanding Knowledge > 97 Expanding Knowledge > 970105 Expanding Knowledge in the Environmental Sciences
D Environment > 96 Environment > 9603 Climate and Climate Change > 960307 Effects of Climate Change and Variability on Australia (excl. Social Impacts)
D Environment > 96 Environment > 9610 Natural Hazards > 961004 Natural Hazards in Forest and Woodlands Environments
B Economic Development > 85 Energy > 8598 Environmentally Sustainable Energy Activities > 859899 Environmentally Sustainable Energy Activities not elsewhere classified
E Expanding Knowledge > 97 Expanding Knowledge > 970112 Expanding Knowledge in Built Environment and Design
Identification Number or DOI: 10.1177/0734904117709203
URI: http://eprints.usq.edu.au/id/eprint/27388

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