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An Enhancement of Earthquake Vulnerability Models for Australian Residential Buildings Using Historical Building Damage

Created 17/10/2025

Updated 17/10/2025

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Geoscience Australia (GA) has developed the Earthquake Risk Model (EQRM) as an open source software for probabilistic earthquake hazard and risk assessment. In the EQRM, earthquake vulnerability models for HAZUS building types are defined with finer subclasses to account for Australian residential building types. An example is the subclass representing a timber framed building with timber walls and a tiled roof. This study aims to determine new building parameter values of earthquake vulnerability models in the EQRM for the Australian residential timber and low-rise unreinforced masonry (URM) buildings using building damage data from two damaging earthquakes: ML 5.6 Newcastle (1989) and ML 5.0 Kalgoorlie (2010). The Newcastle damage data is compiled from insurance claim data, from which the economic loss ratio, the ratio of repair cost to replacement cost, is estimated for timber buildings and low-rise URM buildings. The Kalgoorlie damage data is compiled from a detailed population based survey led by GA, from which the economic loss ratio is estimated for low-rise URM buildings. In both instances the loss ratio data is matched to felt ground shaking intensity (Modified Mercalli Intensity). The compiled building damage data are then used as a reference to determine parameter values for the selected building types. The new vulnerability models for the selected building types are compared with the current models, and the effect of the modifications is highlighted and discussed in scenario impact assessments for a building portfolio in Newcastle, Australia.

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Field Value
Title An Enhancement of Earthquake Vulnerability Models for Australian Residential Buildings Using Historical Building Damage
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/fe3bd7cf-caa2-4b10-a019-1d7ac270d3f0
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 22/04/2018
Geospatial Coverage Australia
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "An Enhancement of Earthquake Vulnerability Models for Australian Residential Buildings Using Historical Building Damage". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/an-enhancement-of-earthquake-vulnerability-models-for-australian-residential-buildings-using-hi2