Damage to residential construction from the tornadoes in Vaughan, Ontario on August 20, 2009

Murray J. Morrison, Gregory A. Kopp, Eri Gavanski, Craig Miller, Arnold Ashton

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The results of a detailed damage investigation of the two tornadoes in Vaughan, Ontario, which were part of the 19 tornadoes in the outbreak of August 20, 2009, are presented. The bulk of the damage in both tornadoes consisted of structural roof failures categorized as F1 on the Fujita Scale and EF1 on the Enhanced Fujita Scale. However, multiple houses in both tornadoes suffered total roof failure, which is F2 (or EF2). It was observed that the total roof failures were all due to either internal pressurization and or weak (or non-existent) roof-to-wall connections. Since internal pressures are likely to be larger than external pressures for these single family residences, it is argued that the total roof failure occurred under wind speed conditions associated with a lower degree of damage, such that actual wind speeds are like those in EF1 in these particular tornadoes.

Original languageEnglish
Title of host publicationForensic Engineering 2012
Subtitle of host publicationGateway to a Better Tomorrow - Proceedings of the 6th Congress on Forensic Engineering
Pages831-840
Number of pages10
DOIs
Publication statusPublished - 2013 Feb 4
Event6th Congress on Forensic Engineering 2012: Gateway to a Better Tomorrow - San Francisco, CA, United States
Duration: 2012 Oct 312012 Nov 3

Publication series

NameForensic Engineering 2012: Gateway to a Better Tomorrow - Proceedings of the 6th Congress on Forensic Engineering

Other

Other6th Congress on Forensic Engineering 2012: Gateway to a Better Tomorrow
CountryUnited States
CitySan Francisco, CA
Period12/10/3112/11/3

ASJC Scopus subject areas

  • Biomedical Engineering

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