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Journal of Building Engineering ; : 103935, 2022.
Article in English | ScienceDirect | ID: covidwho-1587189


The construction industry has played a huge role in sustaining the economy of Australia during the ongoing Covid-19 pandemic. However, construction activities tend to be limited due to the restrictions on travel, transport, and workforce availability which in turn affects the lack of materials and workforce for construction. On the other hand, the prefabricated construction method is known to provide a sustainable solution to reduce the labour and material demand. However, prefabricated construction methods are less preferred over traditional construction in Australia. This is due to the lack of knowledge on the benefits, limitation, design and construction of the prefabricated construction. Therefore, in this study, the authors have conducted a survey to identify the construction industry views on the prefabricated construction in terms of sustainability, technical, cultural, economic, practical and other aspects. A total of 310 construction professionals responded, and the data were analysed using both qualitative (thematic) and quantitative (Severity index) analyses. Results revealed that reduced construction time, high levels of quality control, and reduced on-site noise and disruption were the major benefits when using prefabricated construction compared to traditional construction. The restrictions and limitations of transport;reduced on-site design flexibility;and shortage of specialised workforce hindered the growth of prefabricated construction. These survey results also highlighted that production and manufacturing of prefabricated construction are not affected significantly by the Covid-19 pandemic. Furthermore, significant amount of traditional, residential and commercial construction projects were replaced by prefabricated construction during Covid-19 pandemic, suggesting a future growth in prefabricated construction in Australia.

Journal of Civil Engineering & Management ; 27(2):139-148, 2021.
Article in English | Academic Search Complete | ID: covidwho-1102570


The novel coronavirus (SARS-CoV-2) has spread at an unprecedented rate, resulting in a global pandemic (COVID-19) that has strained healthcare systems and claimed many lives. Front-line healthcare workers are among the most at risk of contracting and spreading the virus due to close contact with infected patients and settings of high viral loads. To provide these workers with an extra layer of protection, the authors propose a low-cost, prefabricated, and portable sanitising chamber that sprays individuals with sanitising fluid to disinfect clothing and external surfaces on their person. The study discusses computer-aided design of the chamber to improve uniformity of sanitiser deposition and reduce discomfort due to excessive moisture. Advanced computational fluid dynamics is used to simulate the dispersion and deposition of spray particle, and the resulting wetting pattern on the treated person is used to optimise the chamber design. [ABSTRACT FROM AUTHOR] Copyright of Journal of Civil Engineering & Management is the property of Vilnius Gediminas Technical University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Risk Manag Healthc Policy ; 14: 247-252, 2021.
Article in English | MEDLINE | ID: covidwho-1052463


This work is part of a project on the development of a smart prefabricated sanitising chamber (SPSC) to provide extra measures against the transmission of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Stabilised hypochlorous acid (HOCl) is an approved disinfectant against SARS-CoV-2 by the Environmental Protection Association US in its liquid form on non-porous surfaces. This review is extended to cover its viricidal/bactericidal efficacy in aerosolised or sprayed form which showed an effective dose of as low as 20 ppm and the exposure duration of at least 60 s. The aerosolised application was also recommended with particle size of less than 200 µm to increase the contact with pathogens. The review also includes the safety and toxicity of HOCl with different concentrations. The review calls for more investigations into the effect of HOCl in mist and fog form on the respiratory system when transitioning through the proposed SPSC.