SH
S. Hooijmaijers
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Branching out: Timber adoption in multi-storey construction through the Diffusion of Innovations framework
A qualitative study of adoption dynamics, barriers, and enablers for multi-storey timber in the Netherlands through a Diffusion of Innovations lens
The Dutch construction sector is under increasing pressure to deliver high-density housing while reducing its environmental footprint. Conventional reliance on concrete and steel drives substantial embodied carbon emissions, putting climate commitments at risk. Engineered timber (CLT/GLT) offers significant advantages in terms of carbon reduction, prefabrication efficiency, and biophilic value. Yet despite its technical feasibility and growing policy support, timber adoption in multi-storey construction remains limited in the Netherlands. This gap is addressed in this research by examining how adoption decisions are shaped at the project level, and how barriers can be overcome through stakeholder motivation and alignment.
The research applies the Diffusion of Innovations (DOI) framework, adapted to the realities of project-based construction. A qualitative research design was adopted, starting with an extensive literature review to identify current barriers and enablers, and to establish the theoretical foundation. This was followed by a case study analysis that examined a full timber project and a hybrid timber project in the Dutch context. In total, fifteen semi-structured interviews were conducted with key stakeholders on both projects, providing perspectives on both strategic considerations and practical experiences.
Findings reveal that while timber's innovation attributes are important, they do not determine adoption on their own. Adoption was often slowed by perceived cost disadvantages, industry fragmentation, and a preference for familiar practices, even as enablers such as environmental performance, market distinctiveness, and prefabrication strengthen its appeal. Project dynamics proved decisive, with early specialist integration, integral design processes, and blurred stakeholder roles reducing uncertainty and making adoption more feasible, while their absence led to weakened ambitions and reversion to conventional materials. Motivated champions played a critical role in sustaining ambition against cost and risk pressures. Crucially, this research highlights the role of inter-project knowledge transfer as a condition for scaling adoption, since lessons often remain locked within projects. Building on these insights, the research adapts the Diffusion of Innovations framework to the fragmented, project-based construction sector by embedding motivation, project dynamics, iteration, and knowledge transfer into the adoption process. Practically, it offers recommendations to foster early collaboration, secure and maintain shared ambitions, position timber as both a sustainability and market advantage, and enable systemic learning across projects to accelerate diffusion.
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The research applies the Diffusion of Innovations (DOI) framework, adapted to the realities of project-based construction. A qualitative research design was adopted, starting with an extensive literature review to identify current barriers and enablers, and to establish the theoretical foundation. This was followed by a case study analysis that examined a full timber project and a hybrid timber project in the Dutch context. In total, fifteen semi-structured interviews were conducted with key stakeholders on both projects, providing perspectives on both strategic considerations and practical experiences.
Findings reveal that while timber's innovation attributes are important, they do not determine adoption on their own. Adoption was often slowed by perceived cost disadvantages, industry fragmentation, and a preference for familiar practices, even as enablers such as environmental performance, market distinctiveness, and prefabrication strengthen its appeal. Project dynamics proved decisive, with early specialist integration, integral design processes, and blurred stakeholder roles reducing uncertainty and making adoption more feasible, while their absence led to weakened ambitions and reversion to conventional materials. Motivated champions played a critical role in sustaining ambition against cost and risk pressures. Crucially, this research highlights the role of inter-project knowledge transfer as a condition for scaling adoption, since lessons often remain locked within projects. Building on these insights, the research adapts the Diffusion of Innovations framework to the fragmented, project-based construction sector by embedding motivation, project dynamics, iteration, and knowledge transfer into the adoption process. Practically, it offers recommendations to foster early collaboration, secure and maintain shared ambitions, position timber as both a sustainability and market advantage, and enable systemic learning across projects to accelerate diffusion.
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The Dutch construction sector is under increasing pressure to deliver high-density housing while reducing its environmental footprint. Conventional reliance on concrete and steel drives substantial embodied carbon emissions, putting climate commitments at risk. Engineered timber (CLT/GLT) offers significant advantages in terms of carbon reduction, prefabrication efficiency, and biophilic value. Yet despite its technical feasibility and growing policy support, timber adoption in multi-storey construction remains limited in the Netherlands. This gap is addressed in this research by examining how adoption decisions are shaped at the project level, and how barriers can be overcome through stakeholder motivation and alignment.
The research applies the Diffusion of Innovations (DOI) framework, adapted to the realities of project-based construction. A qualitative research design was adopted, starting with an extensive literature review to identify current barriers and enablers, and to establish the theoretical foundation. This was followed by a case study analysis that examined a full timber project and a hybrid timber project in the Dutch context. In total, fifteen semi-structured interviews were conducted with key stakeholders on both projects, providing perspectives on both strategic considerations and practical experiences.
Findings reveal that while timber's innovation attributes are important, they do not determine adoption on their own. Adoption was often slowed by perceived cost disadvantages, industry fragmentation, and a preference for familiar practices, even as enablers such as environmental performance, market distinctiveness, and prefabrication strengthen its appeal. Project dynamics proved decisive, with early specialist integration, integral design processes, and blurred stakeholder roles reducing uncertainty and making adoption more feasible, while their absence led to weakened ambitions and reversion to conventional materials. Motivated champions played a critical role in sustaining ambition against cost and risk pressures. Crucially, this research highlights the role of inter-project knowledge transfer as a condition for scaling adoption, since lessons often remain locked within projects. Building on these insights, the research adapts the Diffusion of Innovations framework to the fragmented, project-based construction sector by embedding motivation, project dynamics, iteration, and knowledge transfer into the adoption process. Practically, it offers recommendations to foster early collaboration, secure and maintain shared ambitions, position timber as both a sustainability and market advantage, and enable systemic learning across projects to accelerate diffusion.
The research applies the Diffusion of Innovations (DOI) framework, adapted to the realities of project-based construction. A qualitative research design was adopted, starting with an extensive literature review to identify current barriers and enablers, and to establish the theoretical foundation. This was followed by a case study analysis that examined a full timber project and a hybrid timber project in the Dutch context. In total, fifteen semi-structured interviews were conducted with key stakeholders on both projects, providing perspectives on both strategic considerations and practical experiences.
Findings reveal that while timber's innovation attributes are important, they do not determine adoption on their own. Adoption was often slowed by perceived cost disadvantages, industry fragmentation, and a preference for familiar practices, even as enablers such as environmental performance, market distinctiveness, and prefabrication strengthen its appeal. Project dynamics proved decisive, with early specialist integration, integral design processes, and blurred stakeholder roles reducing uncertainty and making adoption more feasible, while their absence led to weakened ambitions and reversion to conventional materials. Motivated champions played a critical role in sustaining ambition against cost and risk pressures. Crucially, this research highlights the role of inter-project knowledge transfer as a condition for scaling adoption, since lessons often remain locked within projects. Building on these insights, the research adapts the Diffusion of Innovations framework to the fragmented, project-based construction sector by embedding motivation, project dynamics, iteration, and knowledge transfer into the adoption process. Practically, it offers recommendations to foster early collaboration, secure and maintain shared ambitions, position timber as both a sustainability and market advantage, and enable systemic learning across projects to accelerate diffusion.
Rising waters, Resilient lives: The Can Tho region in 2075
Multidisciplinary project on the Mekong Delta
Student report
(2024)
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I.A.J. Helwes, S. Hooijmaijers, W.L. Horeman, J.P. van der Linden, F.D.J. Pallandt, Y. Yang, Luca Iuorio, Anne Baar, J.S. Hoving, J.E.A. Storms
An MDP project performed in the scope of the Delta Futures Lab in collaboration with the Dragon Institute. The report delves into the enviromental threats the Mekong Delta is facing and provides a design framework to deal with these problems. Furthermore, a case study is chosen to display how the framework can be adopted in a practical setting, envisioning what a future looks like where the Mekong Delta co-exists with water.
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An MDP project performed in the scope of the Delta Futures Lab in collaboration with the Dragon Institute. The report delves into the enviromental threats the Mekong Delta is facing and provides a design framework to deal with these problems. Furthermore, a case study is chosen to display how the framework can be adopted in a practical setting, envisioning what a future looks like where the Mekong Delta co-exists with water.