Brambilla, A; Candido, C; Sangiorgio, M F; Gocer, O and Gocer, K (2021) Can commercial buildings cope with Australian bushfires? An IAQ analysis. Buildings & Cities, 2(1), pp. 583-598. ISSN 2632-6655
Abstract
The Australian 2019/20 summer witnessed an extraordinary bushfire season characterised by unprecedented duration, geographical reach and impact. The aftermath of the bushfires includes increased health-related implications on people due to short and long exposure to poor air quality. The current advice from the Australian authorities in such events is to remain indoors, as it was assumed indoor air quality (IAQ) is healthy. This paper examined that assumption and presents the case study of an office building in Canberra subjected to the 2019/20 bushfires, responding to the need of understanding the ability of air-conditioning buildings to cope with such unprecedented and extreme weather events. Measured data for indoor concentration of CO2, PM10 and PM2.5 recorded a prolonged period of concerning levels, as well as extreme concentration peaks. This poses a significant risk to the occupants' health. The values showed peaks up to 12 times higher for PM10 and 24 times higher for PM2.5 than the recommended critical thresholds. The infiltration factor and protection performance analysis suggest that old filtering systems and low airtightness levels are not optimal in protecting the indoor environment from outdoor air pollutants.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | air pollution; building performance; buildings; bushfire; indoor air quality; public health |
| Index terms: | indoor air quality, performance analysis, air quality, commercial building, summer, exposure, duration, extreme weather event, pollutant, bushfire, air pollution, infiltration, case study, building performance, indoor environment, office building, public health |
| Subjects: | project controls, environmental health, environmental hazards, quality assurance, public and environmental health, data analysis and analytics, environmental science, construction type, data collection methods, climate science |
| Topics: | Time Control, Quality Management, Sustainability, Construction Technology, Research Practice, Health and Safety |
| Descriptive scope: | 4 PCEA |
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