A review of critical scouring velocity of compact roof aggregate

L.S. Doddipatla, Gregory Kopp

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Abstract

This paper provides a review of previous studies on how various building parameters affect the critical scouring velocity of roof aggregate, and how these data can be used from a risk mitigation point of view. The review suggests that the data are available only up to a building height of 45 m, with and without parapets, and with no roof-mounted equipment. However, loosely-laid roof aggregate is currently used up to an approximate building height of 150 m in some cities, and these buildings usually have substantial roof-mounted equipment and parapets that are typically less than 1.8 m high. The available data may not necessarily provide reliable recommendations when extrapolated to these high-rise buildings as the aerodynamics of low-rise to high-rise buildings are different and can be influenced by the presence of roof-mounted equipment. The paper concludes by suggesting confidence limits when extrapolating existing data and identifying areas that need further research to address the critical scouring velocity of loosely-laid roof aggregate for low-rise and high-rise buildings.
Original languageEnglish
Pages (from-to)110-124
JournalJournal of Wind Engineering and Industrial Aerodynamics
Volume188
Early online date9 Mar 2019
DOIs
Publication statusPublished - May 2019

Keywords

  • wind-borne debris
  • loosely-laid roof aggregate
  • critical scouring velocity
  • building aerodynamics
  • wind loads

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