@article {bnh-7300, title = {Improving the resilience of existing housing to severe wind events: annual report 2019-2020}, number = {607}, year = {2020}, month = {09/2020}, institution = {Bushfire and Natural Hazards CRC}, address = {Melbourne}, abstract = {

This BNHCRC project titled:\  Improving the resilience of existing housing to severe wind events prescribes practical structural retrofits that will make improvements to the performance of Pre-80s (Legacy) houses in windstorms as well as measures to reduce damage and loss to modern homes.

The major activity carried out in 2019-20 by the CTS-JCU and GA has been refining the VAWS software package using detailed wind loading and structural response test data and conducting a benefit-cost analysis for a range of retrofit or mitigation options:\ 

The retrofit options for the ten selected house types are also being provided as guideline in a website that is being produced. In line with the project timeline, an alpha version of this tool will be presented to Stakeholders in the next Quarter with the intention of having the final version released at the end of the project.

This project continues to give advice to the Queensland Government Household Resilience Program which provides funding to low income eligible home owners to improve the resilience of their homes against cyclones. This program managed by the Queensland Department of Housing \& Public Works (QDHPW) commenced in late 2018 and has been extended through 2020. Eligible home owners can apply to receive a Queensland Government grant of 75\% of the cost of improvements (up to a maximum of $11,250 including GST. About 1700 houses have been retrofitted so far.\ 

}, keywords = {Housing, resilience, severe wind}, issn = {607}, author = {Korah Parackal and Martin Wehner and John Ginger and Hyeuk Ryu and David Henderson and Mark Edwards} } @article {bnh-6276, title = {Improving the resilience of existing housing to severe wind events - annual report 2018-19}, number = {524}, year = {2019}, month = {12/2019}, institution = {Bushfire and Natural Hazards CRC}, address = {Melbourne}, abstract = {

This project will provide practical structural retrofits that will make a significant improvement in the performance of Pre-80s (Legacy) houses to wind loads. The major activity carried out in 2018-19 by the CTS-JCU and GA has been progressing the VAWS software package using wind loading and structural response and other test data:

This project has also provided advice to the Queensland Government Household Resilience Program which provides funding to help eligible home owners improve the resilience of their homes against cyclones. This program is managed by the Queensland Department of Housing \& Public Works (QDHPW) and commenced in late 2018. Eligible home owners can apply to receive a Queensland Government grant of 75\% of the cost of improvements (up to a maximum of $11,250 including GST. About 2000 houses have been retrofitted.

}, keywords = {building resilience, cyclones, Emergency management, engineering, Housing, severe wind, storms, structural design}, issn = {524}, author = {John Ginger and Korah Parackal and Martin Wehner and Hyeuk Ryu and David Henderson and Mark Edwards} } @article {bnh-6656, title = {Retrofitting of a high-set Queensland house for wind loading}, number = {541}, year = {2019}, month = {06/2019}, institution = {Bushfire \& Natural Hazards CRC}, address = {Melbourne}, abstract = {

This report presents a preliminary study on the retrofitting/upgrading of roofing connections in an older Australian house type to improve its performance under wind loading. The house type selected is a rectangular plan high-set house with a low pitched gable roof. These houses are common in North Queensland and have been the subject of previous vulnerability studies by the Cyclone Testing Station. In previous studies this house type is also known as the {\textquoteleft}Group-4 House{\textquoteright}.

Vulnerability to wind loads of a population of these houses will be estimated using the Vulnerability and Wind Simulation (VAWS) software that is currently under development by the Cyclone Testing Station and Geoscience Australia. The changes to vulnerability functions for four connection upgrading scenarios are investigated. These preliminary analyses are used to inform initial cost benefit estimates for retrofitting older Australian houses.

}, keywords = {Housing, retrofitting, roofing, wind loading}, issn = {541}, author = {Korah Parackal and John Ginger and Martin Wehner and David Henderson} } @article {bnh-6054, title = {Fragility and climate impact assessment of contemporary housing roof sheeting failure due to extreme wind}, journal = {Engineering Structures}, volume = {117}, year = {2018}, month = {09/2018}, pages = {464-475}, abstract = {

The paper describes a risk analysis of the economic impact of damage to metal roofing of a typical contemporary (new) Australian house subject to extreme wind loading. The failure modes considered are roof cladding and batten-to-truss connection failures, with the effect of defective construction also considered. Monte-Carlo simulation and structural reliability methods are used to stochastically model spatially varying pressure coefficients, roof component failure, and load re-distribution across the roof. This spatial reliability analysis enables fragility curves to be developed that relate likelihood and extent of roof cover loss to gust wind speed. The annual economic risk is up to 0.3\% of house replacement value. A typical house with construction defects increases economic risk more than sixfold when compared to the defect-free house. There is a 10\% chance that a changing climate will increase expected losses for houses in Brisbane and Melbourne by 6{\textendash}18\% over the next 50 years.

}, keywords = {Climate change, Damage, Fragility, Housing, Reliability, Wind load}, doi = {https://doi.org/10.1016/j.engstruct.2018.05.125}, url = {https://www.sciencedirect.com/science/article/pii/S0141029618302499}, author = {Mark Stewart and John Ginger and David Henderson and Paraic Ryan} } @inbook {bnh-7235, title = {Participation for Disaster Resilience}, booktitle = {Community Engagement in Post-Disaster Recovery}, year = {2017}, publisher = {Routledge Taylor and Francis Group}, organization = {Routledge Taylor and Francis Group}, chapter = {6}, address = {United Kingdom}, abstract = {

This chapter addresses the question of how to enhance community participation in post-disaster housing reconstruction in order to enhance future {\textquoteleft}disaster resilience{\textquoteright}. Four {\textquoteleft}good practice{\textquoteright} reconstruction projects from the Indian states of Gujarat and Bihar are compared, to examine the long-term impact of different participatory approaches. The findings suggest a need to address strategic issues that go beyond one project life cycle of reconstruction projects. These findings are organised into an {\textquotedblleft}operational framework for community participation for resilience{\textquotedblright}, which can hopefully be a valuable tool for a wide range of disaster management agencies.

}, keywords = {community engagement, disaster, Housing, recovery, resilience}, issn = {9781315534213}, doi = {https://doi.org/10.4324/9781315534213}, url = {https://www.taylorfrancis.com/books/e/9781315534213/chapters/10.4324/9781315534213-6}, author = {Mittul Vahanvati} } @conference {bnh-7445, title = {Rural housing resilience in India: Is it reliant on appropriate technology or labour skills?}, booktitle = {Sustainable Futures Conference}, year = {2016}, month = {09/2016}, address = {Nairobi, Kenya}, abstract = {

The aim of this paper is to identify key approaches to housing reconstruction in India which demonstrate success in the: i) (re)building of resilient houses, ii) enabling of house-hold autonomy, and iii) enhancing of artisanal skills over the longer term (i.e. greater than 7 years since disaster). With the rising frequency and complexity of natural hazards, the need for resilience to be {\textquoteright}built in{\textquoteright} to housing reconstruction projects is urgent. To achieve the research aim, a mixed methods methodology and {\textquoteright}case study{\textquoteright} approach is used. Four good practice reconstruction projects in India are selected for comparative analysis, these are: i) Hodko and Patanka in Gujarat (post 2001 earthquake), and ii) Orlaha and Puraini in Bihar (post 2008 floods). This paper discusses findings from empirical investigations conducted using an analytical lifespan framework with the timescale tools reflecting an Input, Output, Results and Impact examination. The findings suggest that for reconstruction to be successful and, importantly, effective in terms of housing resilience the {\textquoteright}process{\textquoteright} must support the confidence of local households, use/employ the local labour fource and the up-skilling of these builders (who may also need on-going support for linkages to livelihood)

}, keywords = {Housing, Reconstruction, recover, resilience}, url = {https://www.semanticscholar.org/paper/Rural-housing-resilience-in-India\%3A-Is-it-reliant-on-Vahanvati-Beza/4fed0ed10a0f077fba67e1d28195aea0677097f8}, author = {Mittul Vahanvati and Beau Beza} }