Abstract
The world’s largest consumer of raw materials is the construction sector, which mostly adopts the linear economy model. Several researchers make an effort to study how to realize a transition in the sector to a circular model of environmental development, applying strategies to preserve the raw resources, maintain materials in use as long as they can be, and reuse and recycle the building components. For increased circular efficiency of the construction, it is ideal to adopt strategies still in the design phase, however, most city buildings weren’t built taking this into account and have a low possibility of adaptation of spaces and disassembly of their materials and components. Dwelling renovation has a crucial role in this scenario, and this research aims to figure out how these strategies can be applied to renovation projects since there is a lack of information on how to do this, as the studies are addressed more to new buildings. Through a systematic literature review, using relevant terms, this document identified the principal’s circular economy strategies for the design phase, the dwelling spatial configuration models and the dissatisfaction of its inhabitants, and some design possibilities that can be applied to renovation projects. These findings contribute to the development of documents focused on architectural design practice.
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1 Introduction
The construction sector adopts practices and application of constructive techniques that make excessive and ineffective use of natural resources, typical of the linear economy model. The sector is the largest consumer of raw materials in the world [1] and one of the major emitters of greenhouse gases (GHG) [2].
There is an urgent need to revise the way the built environment is produced since the linear model has been shown to be inefficient. As an alternative to reduce the impacts, a model that preserves the raw resources, maintains the materials in use as long as they can be, and seeks to reuse and recycle the components of a building is more in line with sustainable development, and the circular economy (CE) emerges as a possibility for this pathway to the construction sector.
The concept of urban mining asserts that cities contain the essential materials for your own renovation, and some authors consider buildings to be material banks. In this way, adaptations of existing buildings can reduce waste, preserve natural resources, and extend the life cycle of buildings [3]. Cities have a massive stock of existing buildings that do not match increasing changes in market demand [4]. European Union data show that 85% of the existing building stock (more than 220 million) was constructed before 2001 and the majority (between 85 and 95%) of the buildings standing today will remain in 2050 [5].
Most cities are composed of residential buildings, and they store most of the construction materials [6]. A dwelling is estimated to have an average lifespan of around 100 years [7]. During the housing’s life cycle, in the occupation and maintenance phase, modifications of various natures are requested. This is due to the dwelling meeting the basic needs of domestic activities according to the way of living of a person or household, which is dependent on the structure of values of a society. Therefore, as this structure changes, the needs and requirements for housing also change, generating the need for rehabilitation of its spaces [8].
A research verified, quantitatively, the construction and demolition waste (CDW) of three housing projects, considering the different stages of the building’s life cycle, and concluded that the amount of waste at the end of life is 40% greater than the materials used in construction, due to the replacement of materials and components during the building’s life [9]. These data show the importance of studying how the circular construction model can be applied to existing housing.
It is in the design phase that the main choices are made, and it includes circular decisions. This makes it possible to foresee some future scenarios for the buildings [10] and minimize or eliminate the need for using new materials [11]. Housing buildings are more susceptible than others to variables that require changes in spatial structure. Circular renovation can extend its useful lifespan, besides benefiting the surrounding area, such as economic and social development [7].
Some circular economy research focuses on design strategies, aiming to give concept professionals support in project decisions [12]. However, as the ideal is to apply the strategies in the early stages of designing a new building [12], it is not clear which parameters of the strategies apply when it comes to renovation projects.
This article aims to analyze how strategies can be applied in dwelling renovation projects. To achieve this purpose, the objective of this research is exploratory, for a better understanding of the subject, and carried out a bibliographic review, searching for publications about circular economy design strategies. In addition, the study uses a qualitative approach to provide context about the theme [13]. As a result, this study is expected to provide analysis that crosses data on the possibilities and characteristics of dwellings’ renovation and what is suggested by design strategies of ecodesign methodologies. This can guide future research directions, as long as it will contribute to implementing CE for enhancing sustainability in refurbishing existing buildings.
The paper is organized into 3 parts. The first is the introduction, the second explains the method adopted for a systematic literature review, and the last one discusses and reports the research results gathering the circular design strategies found in the literature studied, the characteristics of the dwellings, and circular design possibilities that can be applied in renovation projects.
2 Literature Review Methodology
To a comprehensive and critical overview of academic studies on CE strategies applied to renovation design, this study developed a systematic literature review. It leads to a better understanding of the subject and identifies research gaps and potential directions.
Aiming to answer the article’s question titled ‘how circular economy strategies can be implemented in the dwelling renovation design phase’, the literature review adopted a search (Fig. 5.1) with 6 steps: search terms, excluding duplicate articles, title analysis, abstract analysis, full-text analysis, and further research of relevant articles.
Using the Scopus database, a search was made for articles published in the last 5 years (2018–2022), using relevant theme terms in the title, abstract, and keywords. The terms ‘circular economy’, ‘circular design’, ‘design for’, and ‘housing design’ were searched as phrases.
The terms ‘refurbishment’ and ‘renovation’ were chosen based on Shahi et al. [3] research which concluded that ‘renovation’ is defined as ‘the process of replacing or repairing outdated components or remodeling the interior spatial layout of existing buildings’, and this term is a subcategory of ‘refurbishment’, a wider definition that is ‘the process of improving the existing conditions of buildings and making improvements for the existing use’.
The 21 articles of the systematic literature review can be accessed through this link.
3 Results and Discussion
3.1 Circular Economy Strategies
To achieve circularity in building projects, the literature already provided numerous circular economy strategies, also known as ecodesign methodologies, besides tools, and frameworks to apply the strategies in the design phase and support decision-making [14]. The strategies differ in circularity objective and can focus for example on the circularity of the materials, aiming at the reuse and recycling of materials, the adaptability of the buildings, analyzing their capacity for spatial modification, or the components disassembly, avoiding the common end-of-life demolition solution.
Some researchers studied different ecodesign terminologies often used, related to the design stage, and found many terms employed to address the changing needs of users and external factors all over the building life cycle. There are several similarities in terms’ names and objectives, and this can be explained by the lack of standardization and interpretation of the terms, as reported by Munaro et al. [15], whose research presents the most distinct ecodesign terms. Table 5.1 shows the integration done in this research.
The terms can be summed up in two principal methods, Design for Adaptability and Design for Disassembly, to facilitate understanding and because they are considered in some studies as the main strategies to be adopted in design decisions [14, 16]. Both main methods encompass all the other strategies’ objectives.
It is essential to understand how these strategies are presented in practice to identify which strategies can be applied during the renovation design phase. This can be seen in Figs. 5.3 and 5.4, on the next topic, where some design solutions were identified for adaptability or disassembly purposes.
Design for Adaptability (DfA) aims to apply in buildings, design characteristics of flexibility, reconfiguration, or change of function, structure, space, components, systems, services, and size as a response to accommodate change throughout time and minimize demolition risk [12, 15].
Design for Disassembly (DfD) seeks to make a reversible building, instead of demolishing it, by planning in design, the possibility of disassembly of the elements, and the reuse or recycling of its parts [12].
The next section reports on the problem of the rigid layout configuration of the dwellings, the desires for modifications on the part of the inhabitants, and the possible design options for a renovation project identified in the studies.
3.2 Dwellings and the Renovation Projects
Dwelling spatial configuration models and their consequences. In the literature review, some studies examined dwelling characteristics and the relation between them and the market and its inhabitants. The configuration of housing spaces has a logic depending on the period and local culture. This can be better understood using for example, the space syntax method, developed by Hillier and Hanson [17], which evaluates spatial configurations and, when applied to dwellings, assesses meaningful information about architectural spaces, their relationship, and the connectivity between them. In general, the construction market follows a spatial configuration model and builds dwellings without flexibility possibility. Therefore, the inhabitants show dissatisfaction with the model imposed on them [18]. Griz et al. [8, 19] report incompatibility between market offers and inhabitants’ demands, causing modifications/customizations to be performed on the first resident as seen in Fig. 5.2. Gilani and Türker [20], in a survey with inhabitants, found that 64% of dwellers want to change space organizations, 62% the functions of interior spaces for functional flexibility and 54% want to change wall arrangements for privacy needs. Ollár et al. [18] report that the most frequent motivations for a renovation were dissatisfaction with the dwelling layout, a lack of workspace, insufficient floor area, obsolete furniture, or appliances, improve the appearance of the kitchen, and an increase or decrease in household size.
Example of the original project and the customization [19]
Le Corbusier in 1914, with the Domino system, showed to architects the possibility to separate the interior from the structure, with the ‘free floor plan’ strategy to achieve space flexibility. The De Stijl movement’s manifesto (1924) and Mies van der Rohe’s ideas (1926) also talk about adaptability in spaces and defend movable and non-supporting walls [21]. But many housings built before and after these modern concepts were designed to have a specific function, interior dimensions, and space organization, with rigid structures and non-movable dividing walls, and considered low possibilities of adapting spaces to contemporary and future requirements of environments [16, 20].
This raises the question of the role of a renovation in minimizing the impact of future modifications by different residents who will still reside in the place.
Design possibilities in renovation projects. The literature review revealed some circular design strategies for new buildings that are also applicable to renovation design, to enhance circularity, more specifically, properties of adaptability, flexibility, disassembly, and reversibility in the modified housing area.
These possibilities were recognized based on modifications characteristic of a renovation in a dwelling, such as changes in layout, which lead to demolition and construction of walls, kitchen and bathroom counter changes, furniture exchange, and a new heating/cooling system, among other services. Ollár et al. [18] report that in previous research from other authors, it is said that ‘the kitchen is one of the functions of the home, which is most often subject to renovations and adaptations’, and Stijn et al. [22] reports that domestic furniture and appliances account for 35% of building environmental impacts.
This section answers the article’s question of ‘how circular economy strategies can be implemented in the dwelling renovation design phase’. Figures 5.3 and 5.4 below show the circular design options for renovation projects, the reference where it was reported, and the relation to the specific principal strategy the design possibility belongs to.
As seen in the information presented above, there were just a few design options identified in studies that can also be applied to renovation projects, and many are common, such as modular kitchens and dry connections. It was noticed that minor-scale component modifications such as coatings, kitchen and bathroom pieces, lighting, and piping have minimal or no direction on how to be done, especially in renovation projects. Therefore, considering the literature reviewed, design decisions about other housing elements that are not addressed in the studies, are subject to the designer’s interpretation through the broad concepts of strategies.
Also, for a more sustainable renovation proposal, it is imperative to analyze the quality and impact of the materials used and the economic viability of choices through a life-cycle assessment analysis [12].
Several researchers report the importance of material choice, focusing on reused materials, bio-based materials, and recyclability possibilities [12]. For ‘Design for Disassembly’, it is also important that the material has a Material Passport to guide the path through reuse [11].
4 Conclusion
Through the literature review developed, and the definition of renovation given in Shahi et al. [3] research, this paper recognized design possibilities to be applied to renovation projects related to the principals’ circular strategies studied. However, there were difficulties in gathering this information, as it was verified a lack of definitions regarding the practical application of circular strategies by design professionals, and, in general, those possibilities were described as an example in studies texts and tables.
This shows an opportunity for future research to increase the discussion that focuses on developing documents capable of guiding the application of circular economy strategies in projects, both for new buildings and for renovation. The development of research that addresses the investigation of executed architectural renovation projects that aim to apply circular characteristics, and the analysis of assessments and tools, such as Level(s) from the European Union, and certification guides, like the ones from the Green Building Council, are important in the definition of strategies for renovation projects.
It is essential to broaden this discussion and focus on its applicability, so that there is greater harmony between the market and inhabitants, offering greater possibilities for spatial, aesthetic, and functional modifications from day one of the housing, without major environmental damage.
References
Nairobi (2021) United Nations environment programme, global status report for buildings and construction: towards a zero-emissions, efficient and resilient buildings and construction sector. http://www.globalabc.org
Wang K et al (2022) Circular economy as a climate strategy: current knowledge and calls-to-action. Washington
Shahi S, Esnaashary Esfahani M, Bachmann C, Haas C (2020) A definition framework for building adaptation projects. Sustain Cities Soc 63. https://doi.org/10.1016/j.scs.2020.102345
Durmisevic E et al (2019) Circular economy in construction design strategies for reversible buildings
Bruxelas (2020) Comissão Europeia, Impulsionar uma Vaga de Renovação na Europa para tornar os edifícios mais ecológicos, criar emprego e melhorar as condições de vida
Soonsawad N, Martinez RM, Schandl H (2022) Material demand, and environmental and climate implications of Australia’s building stock: current status and outlook to 2060. Resour Conserv Recycl 180:106143. https://doi.org/10.1016/J.RESCONREC.2021.106143
Cellucci C (2021) Circular economy strategies for adaptive reuse of residential building. Vitruvio 6(1):110–121. https://doi.org/10.4995/vitruvio-ijats.2021.15404
Griz C, Mendes L, Guedes V, Amorim L (2015) Reformar ou não reformar? Análise da influência da forma na customização de projetos de apartamentos, pp 677–685
Marrero M, Rivero-Camacho C, Alba-Rodríguez MD (2020) What are we discarding during the life cycle of a building? Case studies of social housing in Andalusia, Spain. Waste Manag 102:391–403. https://doi.org/10.1016/j.wasman.2019.11.002
Munaro MR (2022) The circular economy in the construction sector: existing trends, challenges, and tools towards buildings as material banks, Curitiba. https://www.prppg.ufpr.br/siga/visitante/autenticacaoassinaturas.jsp
Antwi-Afari P, Ng ST, Chen J (2022) Developing an integrative method and design guidelines for achieving systemic circularity in the construction industry. J Clean Prod 354. https://doi.org/10.1016/j.jclepro.2022.131752
Dams B et al (2021) A circular construction evaluation framework to promote designing for disassembly and adaptability. J Clean Prod 316. https://doi.org/10.1016/j.jclepro.2021.128122
Engel Gerhardt T, Tolfo Silveira D, Métodos de Pesquisa, Porto Alegre (2009)
Askar R, Bragança L, Gervásio H (2022) Design for Adaptability (DfA)—frameworks and assessment models for enhanced circularity in buildings. Appl Syst Innov 5(1). https://doi.org/10.3390/asi5010024
Munaro MR, Tavares SF, Bragança L (2022) The ecodesign methodologies to achieve buildings’ deconstruction: a review and framework. Sustain Prod Consump Elsevier B.V. 30:566–583. https://doi.org/10.1016/j.spc.2021.12.032
Askar R, Bragança L, Gervásio H (2021) Adaptability of buildings: a critical review on the concept evolution. Appl Sci (Switz) 11(10). MDPI AG. https://doi.org/10.3390/app11104483
Hillier B, Hanson J (1984) The social logic of space. Cambridge University Press. https://doi.org/10.1017/CBO9780511597237
Ollár A, Granath K, Femenías P, Rahe U (2022) Is there a need for new kitchen design? Assessing the adaptative capacity of space to enable circularity in multiresidential buildings. Front Arch Res 11(5):891–916. https://doi.org/10.1016/j.foar.2022.03.009
Griz C, Amorim L, Loureiro C (2014) Entre a oferta e a demanda: a elite em busca do morar bem, in XV Encontro Nacional de Tecnologia do Ambiente Construído, Marketing Aumentado, pp 1863–1872. https://doi.org/10.17012/entac2014.107
Gilani G, Türker ÖO (2020) Assessing flexibility in real estate mass housing. Arquiteturarevista 16(1):154–175. https://doi.org/10.4013/arq.2020.161.09
Estaji H (2017) A review of flexibility and adaptability in housing design. Int J Contemp Arch 4(2). https://doi.org/10.14621/tna.20170204
van Stijn A, Eberhardt LCM, Wouterszoon Jansen B, Meijer A (2022) Environmental design guidelines for circular building components based on LCA and MFA: lessons from the circular kitchen and renovation façade. J Clean Prod 357. https://doi.org/10.1016/j.jclepro.2022.131375
Tarpio J, Huuhka S, Vestergaard I (2022) Barriers to implementing adaptable housing: architects’ perceptions in Finland and Denmark. J Housing Built Environ 37(4):1859–1881. https://doi.org/10.1007/s10901-021-09913-1
Rabeneck A, Sheppard D, Town P (1974) Housing flexibility/adaptability? Arch Des 49:76–90
Wouterszoon Jansen B, van Stijn A, Gruis V, van Bortel G (2022) Cooking up a circular kitchen: a longitudinal study of stakeholder choices in the development of a circular building component, sustainability (Switzerland). 14(23). https://doi.org/10.3390/su142315761
O’Grady T, Minunno R, Chong HY, Morrison GM (2021) Design for disassembly, deconstruction and resilience: a circular economy index for the built environment. Resour Conserv Recycl 175. https://doi.org/10.1016/j.resconrec.2021.105847
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Figueirôa, Í., do Carmo Duarte Freitas, M., Tavares, S.F., Bragança, L. (2024). How Circular Economy Strategies Can Be Implemented in the Dwelling Renovation Design Phase. In: Bragança, L., Cvetkovska, M., Askar, R., Ungureanu, V. (eds) Creating a Roadmap Towards Circularity in the Built Environment. Springer Tracts in Civil Engineering . Springer, Cham. https://doi.org/10.1007/978-3-031-45980-1_5
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