Vulnerability modelling for residential housing

Smith, Daniel J., and Henderson, David J. (2016) Vulnerability modelling for residential housing. In: [Presented at 18th Australasian Wind Engineering Society Workshop]. From: 18th Australasian Wind Engineering Society Workshop, 6-8 July 2016, McLaren Vale, SA, Australia.

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Abstract

Modelling the performance of buildings during extreme natural hazards is an important part of modern insurance markets, government policy decision making, and consequently building science research. Vulnerability models are integral to this process.The most robust development of empirical vulnerability models utilizes the relatively large amount of data for hurricane losses in the US. Engineering-based models have also been developed extensively in the US public sector (e.g., HAZUS, FPHLM) and calibrated against empirical data. Development of models for other countries has been more difficult due to relatively smaller amounts of data on losses from severe weather events.

Empirical and engineering-based models for Australian housing do exist in the public domain but they are either very broad (e.g.,pre vs post 1980s, or Townsville vs Cairns) or apply only to a select housing type and have not been through a robust validation process, largely due to a lack of data on losses. More recently, a series of heuristic curves for several typical Australian low-rise residential construction types has been developed based on input from recognized vulnerability experts of the Australian wind engineering community. While this is a step towards a more comprehensive set of curves, calibration against previous models, post-storm observations and loss data is needed. This paper briefly reviews the previous models and discusses a preliminary analysis of loss data from one north Queensland insurer during Cyclone Yasi (2011). The work follows from a series of recent studies conducted by the authors and the insurer, which analysed insurance claims from Cyclone Yasi to determine typical drivers of loss (i.e. roofing failures, etc.) for residential housing.

Item ID: 45854
Item Type: Conference Item (Non-Refereed Research Paper)
Keywords: cyclone, vulnerability, modelling, insurance, wind resistance, housing
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Funders: Queensland Government Advance Queensland Research Fellowship, Bushfire and Natural Hazards Cooperative Research Centre (BNHCRC), Suncorp Group Limited (SGL)
Date Deposited: 27 Sep 2016 23:34
FoR Codes: 09 ENGINEERING > 0905 Civil Engineering > 090506 Structural Engineering @ 50%
12 BUILT ENVIRONMENT AND DESIGN > 1204 Engineering Design > 120402 Engineering Design Knowledge @ 50%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 100%
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