This paper presents work aimed at improved organization and performance of production in housing renovation projects. The purpose is to explore and demonstrate the potential of lean work organization and industrialized product technology to improve workflow and productive time. The research included selected case studies that have been found to implement lean work organization and industrialized product technology in an experimental setting. Adjustments to the work organization and construction technology have been implemented on site. The effects of the adjustments have been measured and were reviewed with operatives and managers. The data have been collected and analyzed, in comparison to traditional settings. Two projects were studied. The first case implied am application of lean work organization in which labor was reorganized redistributing and balancing operations among operatives of different trades. In the second case industrialized solution for prefabricated installation of prefabricated roofs. In both cases the labor productivity increased substantially compared to traditional situations. Although the limited number of cases, both situations appeared to be representative for other housing projects. This has led to conclusions extrapolated from both cases applicable to other projects, and contribution to the knowledge to improve production in construction. Vrijhoef, R. (2016). “Effects of Lean Work Organization and Industrialization on Workflow and Productive Time in Housing Renovation Projects.” In: Proc. 24 th Ann. Conf. of the Int’l. Group for Lean Construction, Boston, MA, USA, sect.2 pp. 63–72. Available at: .
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There is an urgent need for energy renovation of the existing building stock, in order to reach the climate goals, set in Paris in 2016. To reach climate targets, it is important to considerably lower energy demand as well as switch to fossil-free heating systems. Unfortunately, renovation rates across the EU remain at a low level of 1% per year. Deep renovation, which lowers energy use with 60% or more, accounts only for 0,2% of renovations. The heating transition thus progresses much more slowly than the electricity transition. We draw on the framework of technological innovation systems, which allows comparison of different transitions. In the literature, it is argued that the configurational nature of the renovation system is one of the main reasons for the slow heating transition. The renovation system is context-bound and consists of many actors both on the demand-side and the supply-side, which leads to a fragmented market. For increasing the speed of the heating transition, it is deemed important to counter this fragmentation. We carried out a review of reports and publications of EU-funded projects on energy renovation. In many projects fragmentation in the building sector was identified as one of the main obstacles. We analyzed the deliverables of these energy renovation projects to find tried and tested solutions. One of these is the so-called one-stop-shop, which promises to improve the organization of the supply side, while also providing an appropriate and affordable solution to the customer. In the discussion we argue that the energy renovation system could be improved by increasing collaboration on the supply side and at the same time simplifying the renovation process for customers. A promising tool to make this happen is the one-stop-shop.
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One of the most complex and urgent challenges in the energy transition is the large-scale refurbishment of the existing housing stock in the built environment. In order to comply with the goals of the Paris convention, the aim is to live “energy-neutral,” that is, a dwelling should produce as much sustainable energy as it consumes on a yearly basis. This means that millions of existing houses need to undergo a radical energy retrofit. In the next 30 years, all dwellings should be upgraded to nearly zero-energy buildings, which is a challenge to accomplish for a reasonable price. Across the EU, many projects have developed successful approaches to the improvement of building technologies and processes, as well a better involvement of citizens. It is important to compare and contrast such approaches and disseminate lessons learned. In practice, it is crucial to raise the level of participation of inhabitants in neighborhood renovation activities. Therefore, the central question of this issue is: How can we increase the involvement of tenants and homeowners into this radical energy renovation?
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This article deals with the question how renovate the houses in the Netherlands with taking into account the future need for modifications.
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One of the most complex and urgent challenges in the energy transition is the large‐scale refurbishment of the existing housing stock in the built environment. In order to comply with the goals of the Paris convention, the aim is to live “energy‐neutral,’’ that is, a dwelling should produce as much sustainable energy as it consumes on a yearly basis. This means that millions of existing houses need to undergo a radical energy retrofit. In the next 30 years, all dwellings should be upgraded to nearly zero‐energy buildings, which is a challenge to accomplish for a reasonable price. Across the EU, many projects have developed successful approaches to the improvement of building technologies and processes, as well a better involvement of citizens. It is important to compare and contrast such approaches and disseminate lessons learned.In practice, it is crucial to raise the level of participation of inhabitants in neighborhood renovation activities. Therefore,the central question of this issue is: How can we increase the involvement of tenants and homeowners into this radicalenergy renovation?
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There is an urgent need for energy renovation of the existing building stock to reach the climate goals, set in Paris in 2016. Unfortunately, energy renovation rates across the EU remain at a low level of 1% per year. Moreover, the depth of the achieved energy renovation is in most cases rather shallow. Deep renovation, referring to renovation which lowers energy use with 60% or more, accounts for only 0,2% of total refurbishments. This means that both the pace and the quality of energy renovation needs to increase to achieve climate goals in 2050. In this article we identify lessons-learned from policies for energy renovation, in particular policies regarding the Energiewende in Germany. With an effective approach, combining remuneration and information, a revolutionary increase in RES-installations was brought about.
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Supply chain partnerships within housing refurbishment have not been given much specific attention which may be found surprising because the refurbishment market is becoming of increasing importance compared to new construction and has specific characteristics that require adapted approaches to supply chain integration. In this paper approaches, expected benefits and challenges of supply chain partnerships within housing renovation are explored. From general literature on building process innovation, dimensions of supply chain integration and potential advantages and challenges of have been derived and employed in a preliminary inquiry among Dutch housing associations and their partners that are experimenting with supply chain partnering in housing refurbishment projects. The results indicate that approaches are in a relatively early stage of development towards ‘mature’ supply chain partnerships. Furthermore, many of the general expectations also apply to the Dutch housing refurbishment sector, but at a more detailed level, refurbishment may require specific attention for the division of tasks and risks between the partners, particularly regarding communication with tenants.
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What are the circular possibilities for materials and productsavailable in the Griffiersveld pilot and how can this informationbe presented? Interviews with stakeholders have led to a list ofrequirements for the material passports and what informationthey should include. Existing and experimental materialpassports have been collected and analysed to see whetherthey meet the requirements. The construction materials on siteare identified and circular possibilities of these materials arelisted. Finally an advice is given for the municipality ofApeldoorn for a circular renovation approach.
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CC-BY 4.0 In this report the research focusses on designing a method to circularly redesign a road in neigbourhood participation. Municipalities are becoming more aware of their environmental footprint. The construction andrenovation of public spaces come with the transport and processing of large volumes of concrete, clay bricks and asphalt. We are in the transition towards a circular economy. In the CityLoops project we propose the following composite definition for the circular economy, drawing on the work of different academics in the field. What are the circular possibilities for materials and products available in the Griffiersveld pilot and how can this information be presented? Interviews with stakeholders have led to a list of requirements for the material passports and what information they should include. Existing and experimental material passports have been collected and analysed to see whether they meet the requirements. The construction materials on site are identified and circular possibilities of these materials are listed. Finally an advice is given for the municipality of Apeldoorn for a circular renovation approach.
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From the conference paper : "The authors examined how to improve the total (onsite and offsite) labour productivity of production and assembling of fast retrofitting concepts in the Netherlands. The authors analysed the collected data of two NetZero energy renovations in which the initial process were quite traditional. In the first case the labour productivity can increase spectacularly by prefabricating the roof. In the second case the providers modernized the process by working in multi-disciplinary teams. No evidence have been found that working in a multi-disciplinary team can increase the labour productivity but the time for realization did decrease."
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