Climate adaptation measures improve housing resilience to extreme winds, and reduce economic losses associated with wind and rainfall damage under a changing climate. Several adaptation measures are adopted in this study for Australian contemporary houses subjected to non-cyclonic windstorms to either reinforce the building envelope or increase the water resistance of building interior. A risk-based cost-benefit analysis is conducted to evaluate the cost-effectiveness of these adaptation measures that considers the effect of construction defects. It was found that the annual expected losses for houses in Brisbane with construction defects are considerably higher than those without considering construction defects, whereas the influence of construction defects is lower for the Melbourne houses. The cost-benefit analysis reveals that strengthening windows is cost-effective for Brisbane and Melbourne houses. Installing window shutters significantly reduces economic risks associated with extreme winds and is cost-effective for houses in Brisbane. Adaptation measures are generally not cost-effective for Melbourne houses due to lower extreme wind speed and associated rainfall.

中文翻译：

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极端风下澳大利亚当代房屋气候适应措施的基于风险的成本效益分析

气候适应措施提高了房屋抵御极端风的能力，并减少了在气候变化下与风和降雨造成的经济损失。在这项研究中，针对遭受非飓风风暴影响的澳大利亚当代房屋采取了几种适应措施，以加强建筑围护结构或增加建筑物内部的防水性。进行了基于风险的成本效益分析，以评估这些考虑建筑缺陷影响的适应措施的成本效益。研究发现，布里斯班有建筑缺陷的房屋的年均预期损失要比未考虑建筑缺陷的房屋的年预期损失高得多，而建筑缺陷对墨尔本房屋的影响要小。成本效益分析表明，对于布里斯班和墨尔本的房屋，加强窗户是合算的。安装百叶窗可大大降低与极端风相关的经济风险，并且对于布里斯班的房屋而言具有成本效益。由于较低的极端风速和相关的降雨，适应措施通常对于墨尔本的房屋而言并不划算。