Infrastructure Engineering - Research Publications

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Author: Akemi Yokota, Alessandra × Author: Aye, Lu × Author: Noguchi, Masayoshi × End date: 2019 × Start date: 2010 × Type: Conference Paper ×

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    Exploring demands for mass customised prefabricated houses in Brazil
    Akemi Yokota, ; Aye, L ; Noguchi, M (ZEMCH Network, 2018-01-29)
    Housing shortage has been a challenge faced by many countries around the world. In Brazil, the housing supply capacity was less than demand by about 5.4 million dwellings in 2011. To address this shortfall, the Brazilian government launched ‘Programa Minha Casa Minha Vida’ (My House, My Life Program) in 2009 with the aim of reducing housing shortage. The program was divided into three development stages, the first and second stages of the program were completed in 2014 and 2016, respectively. The third stage is now ongoing, a grand total of 4.6 million dwellings are expected to be delivered at the completion by the end of 2018. However, there is significant lack of information on reliable housing demand and supply predictions for the coming years in Curitiba. In addition, the consumers’ feedback from first and second development stages showed that lack of choice and design customisability have been an issue. Therefore, quantifying housing demand in Curitiba is extremely important for planning purposes and better houses. Mass customised prefabricated houses have enormous potential to deliver high-quality in large scale with shorter time by providing options for the consumers. The aim of this study is to develop a housing demand model of mass customised houses for the city of Curitiba. The potential for future mass customisation in Curitiba is explored as the demand of various house sizes are predicted up to 2025. Based on the Brazilian Census data from 2010, population profiles and diversity of family’s structures are used as influencing parameters in the model. The outcome of the proposed model can be used as guideline or public policy for delivering appropriate mass customised houses which would fit future needs and desires of people. The predicted results show substantial reduction in size of the family living at the same dwelling, which will certainly impact on the future of the housing market. It was interpreted that there is a need of more compact one and two-bedroom dwellings, reducing the demand of four-bedroom dwellings.
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    Full Cost Assessment: A method to analyse sustainability of buildings
    Akemi Yokota, A ; AYE, L ; Noguchi, M (Hong Kong Green Building Council, 2017-06-05)
    Quantifying the sustainability of buildings is a complex and very challenging task. Three interdependent factors: society, economy and environment need to be considered. It requires a systematic assessment of all these three factors for the entire life-cycle of the building. Full cost assessment (FCA) is an accounting method that monetises direct, indirect and external aspects. Since external aspects are considered, FCA provides a systematic approach to monetise the current and future impacts of decisions which may cause environmental and social impacts. The oil and gas industry was the first to apply the FCA approach in their decision-making processes. Recently, applications of FCA have been expanded to many areas such as energy supply, waste management, chemical process, transport system, and urban development. This paper aims to identify the benefits and limitations of FCA on the evaluation for the sustainability of buildings. The concept of FCA, the relevant methods available and the applicability of FCA to buildings are discussed.