Market pressures and regulations are increasingly dnving businesses to consider environmental issues during product development, promoting the idea of Design for Environment (DE). A number of different approaches to D E have emerged as this concept takes hold, which cover the spectrum from Life Cycle Assessment (LCA) to guidelines for design to Design for Disassembly. Conducting a full LCA is very difficult for those who are not familiar with the method, such as design teams charged with the development of complex products (e.g., electronic devices or cars). Other approaches to DfE address specific concerns but have limitations in scope and applicability. To fully address the concept of D E , most companies require an integrated approach that provides life cycle data for their products and addresses regulatory and consumer concems.the requirements of a product design team. It will present how these methodologies can be combined to provide a robust life cycle design tool, and it will outline how it would meet the needs of a typical design team.Thn paper will present how each of these different D E approaches falls short with respect to

L’article vise à exposer un travail de recherche amorcé à l’automne 2013 à propos des conditions, des enjeux et des effets de l’intégration des principes de l’innovation ouverte et, plus particulièrement, de l’approche design et du codesign dans le développement des institutions comme les bibliothèques publiques. Il propose dans un premier temps une théorie pragmatique originale du design social, à la frontière du design et de la sociologie, comme sociologie des associations par le design. Il présente ensuite deux démarches de codesign réalisées en 2014 en recherche-intervention dans le cadre de projets de rénovation de bibliothèques d’arrondissement de la Ville de Montréal.This paper presents a study begun in fall 2013 of the conditions, issues and effects of incorporating principles of open innovation and, more particularly, the design and co-design approach, into the development of institutions like public libraries. It first outlines an original pragmatic theory of social design, on the boundary between design and sociology, as the sociology of associations by design. It then presents two action research codesign processes carried out in 2014 as part of City of Montreal library renovation projects

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