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Designs 2018, 2(3), 30;

A Modular Timber Construction System for the Sustainable Vertical Extension of Office Buildings

Laboratory of Architecture and Sustainable Technologies (LAST), Institute of Architecture (IA), School of Architecture, Civil and Environmental Engineering (ENAC), Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
Author to whom correspondence should be addressed.
Received: 21 June 2018 / Revised: 17 July 2018 / Accepted: 25 July 2018 / Published: 8 August 2018
(This article belongs to the Special Issue Integrated Sustainable Building Design, Construction and Operation)
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Most European cities are facing urban densification issues. In this context, a solution to create usable spaces without additional pressure on land consists in the vertical extension of existing buildings. Given their abundance in the building stock, tertiary buildings offer an important potential. The paper introduces the Working Space project, which aims to develop an innovative, modular and prefabricated timber construction system adapted to the vertical extension of existing office buildings. The dimensions of the system can be adjusted to a great variety of structural grids and allows for any new typological organisation. Based on the principles of bioclimatic architecture, the extension’s envelope provides high-performance insulation, a smart management of passive solar gains, natural ventilation and free cooling, but also offers large surfaces dedicated to photovoltaic energy production and urban biodiversity. The system is made up of eco-friendly, local materials with very low environmental impact. The project’s outcomes are presented at a variety of scales, from urban design to construction details, as well as the outputs of an extensive life cycle assessment including the induced mobility impacts. Finally, the paper introduces a first application of this innovative architectural concept, which is currently being completed in Lausanne, Switzerland. View Full-Text
Keywords: sustainable architecture; modular construction; timber prefabrication; bioclimatic conception sustainable architecture; modular construction; timber prefabrication; bioclimatic conception

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Dind, A.; Lufkin, S.; Rey, E. A Modular Timber Construction System for the Sustainable Vertical Extension of Office Buildings. Designs 2018, 2, 30.

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