Werner Sobek: "The construction industry urgently needs a new mindset." The new UMAR experimental unit demonstrates how construction solutions can be completely eco-friendly. The Urban Mining & Recycling (UMAR) unit opened at the beginning of February on the campus of the Swiss Research Institute, Empa. UMAR is a residential unit featuring two bedrooms and a living room, constructed exclusively from reusable, recyclable or compostable materials. The building design was created by Werner Sobek in collaboration with Dirk Hebel and Felix Heisel. Professor Sobek is the Director of the Institute for Lightweight Structures and Conceptual Design (ILEK) at Stuttgart University and the founder of the Werner Sobek Group. The Urban Mining & Recycling (UMAR) experimental unit demonstrates how a responsible approach to the use of natural resources in construction can go hand in hand with appealing architecture. "The continuous growth in world population and dwindling natural resources are creating an urgent need for a change in mindset within the construction industry,“ explains Sobek. The Stuttgart-based architect and engineer is widely-recognized as a pioneer of sustainable construction, with numerous affiliated projects in further education and research. His latest venture, the new UMAR experimental unit, is also attracting great interest from around the globe and is linked with various institutes. The Urban Mining & Recycling (UMAR) experimental unit is part of the NEST research facility on the campus of the Swiss Federal Laboratories for Materials Science and Technology (Empa) in Dübendorf, Switzerland. The building was designed and constructed with reusable, recyclable or compostable materials by Werner Sobek in collaboration with Dirk E. Hebel and Felix Heisel, both of the Karlsruhe Institute for Technology (KIT). The project demonstrates how a responsible approach towards the use of available natural resources can go hand in hand with the creation of appealing architectural structures – something which Werner Sobek feels very passionately about. Reusable, recyclable or compostable The UMAR project is characterized by the premise that all natural resources required to construct a building must be fully reusable, recyclable or compostable. This places life cycle thinking at the forefront of the design: instead of merely being used and subsequently disposed of, the materials used in construction are temporarily borrowed from their technical and biological cycles for a certain period, before being entered back into circulation later. Such an approach makes reusing and repurposing materials just as important as recycling and upcycling them, both at a systemic and a molecular/biological level, for example through melting or composting. This conceptual emphasis means that UMAR functions simultaneously as a materials laboratory and a temporary materials storage unit. The following concepts lie behind the design of UMAR: • Temporary removal or borrowing in place of permanent acquisition and disposal • As much modularization and prefabrication as possible • The potential for all materials and products to be extracted cleanly, separated and sorted The materials include untreated wood, recyclable metal, repurposed insulation materials and recycled bricks The building, which was created on the basis of a modular construction concept, was fully prefabricated and tested in a manufacturing facility. The supporting structure and large parts of the façade consist of untreated wood, a material that can be reused or composted when the building is dismantled. The façade also includes aluminium and copper, two types of metal that can be cleanly separated out, melted down and recycled. The interior of the unit contains an extremely diverse range of serially manufactured building products whose various constituent materials can be separated and sorted before being introduced back into their respective material cycles without leaving behind any residue or waste. Materials used here include cultivated mycelium boards, innovative recycled bricks, repurposed insulation materials, rented floor coverings and a multifunctional solar thermal installation. Public repository of information and a source of inspiration for future eco-friendly construction projects UMAR is not only a material storage unit, but also a public repository of information that is intended to serve as a reference and source of inspiration for other building projects. As Werner Sobek explains, "In future, we will need to create buildings for far more people with far fewer resources. UMAR wants to make a contribution to the paradigm shift that is required within the construction industry. The module functions both as a laboratory and a test run for sustainable building projects and the processes associated with them. In collaboration with partners from the worlds of planning, administration and production, the goal for the unit is to examine resource consumption and key issues in the construction industry, using the resulting insights to develop a range of innovative tools and construction methods." Facts and Figures Project team: „Urban Mining & Recycling“ Client: Empa, The Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland Concept, Design and Planning: Werner Sobek in collaboration with Dirk E. Hebel and Felix Heisel, Stuttgart and Karlsruhe, Germany Stuttgart, June 2018 Publication free of charge / Specimen copy requested Captures: Title The new UMAR experimental unit demonstrates how construction solutions can be completely eco-friendly. Photo: Zooey Braun 01 The Urban Mining & Recycling (UMAR) experimental unit opened in February on the campus of the Swiss Research Institute Empa. Photo: Zooey Braun 02 The design of the UMAR experimental unit demonstrates how the responsible use of natural resources in construction can go hand in hand with attractive architecture. Photo: Zooey Braun 03 The interior features construction products from serial manufacture. The various materials can be fed back into their material life cycles without residue or waste. Photo: Zooey Braun 04 The unit features recycled bricks, reused door handles and 3D-printed screens amongst other materials. Photo: Zooey Braun 05 Some expanses of wall and ceiling cladding have been purposely omitted in order to make the structure and materiality of the unit more visible. Photo: Zooey Braun 06 The UMAR experimental unit offers separate living space for two post-graduate students as well as a spacious lounge area and two bathrooms. Rendering: Werner Sobek with Dirk E. Hebel and Felix Heisel 07 Only separately reusable, recyclable or compostable materials have been used in the construction of UMAR. Rendering: Werner Sobek with Dirk E. Hebel and Felix Heisel 08 The supporting structure and large parts of the façade consist of untreated wood, a material that can be reused or composted after the building is dismantled. Rendering: Werner Sobek with Dirk E. Hebel and Felix Heisel 09 The concept of material life cycle is key: materials used are borrowed temporarily from their technical or biological cycles before being entered back into circulation afterwards. Photo: René Müller 10 Reusing and repurposing materials is just as important, both at a systemic and a molecular/biological level, such as through melting or composting. Photo: René Müller 11 Floor plan of the UMAR Experimental Unit Illustration: Werner Sobek with Dirk E. Hebel and Felix Heisel 12 Professor Dr. Dr. E.h. Dr. h.c. Werner Sobek. The Werner Sobek company was founded in 1992 by Werner Sobek, the renowned architect and engineer. He is recognized throughout the world as a pioneer of the eco-friendly construction of the future. Photo: A.T. Schaefer, Stuttgart, Germany About Empa The Swiss Federal Laboratories for Materials Science and Technology (Empa) is an interdisciplinary research institute of the ETH Zurich in the field of materials and technology research. It forms a bridge between research and practical applications, developing solutions for the key challenges facing industry and creating the scientific basis for the sustainable development of our society. As a research institute belonging to the ETH Domain, Empa is committed to excellence in every area of activity. About NEST NEST accelerates the process of innovation in the building sector. In this modular research and innovation building of Empa and Eawag, new technologies, materials and systems are tested, researched, honed and validated under realistic conditions. Close cooperation with partners from research, industry and the public sector helps bring innovative construction and energy technologies to market faster. About Werner Sobek Named after its founder, the Werner Sobek Group was set up in 1992 and stands worldwide for engineering, design and sustainability, with over 300 employees located between Stuttgart, Buenos Aires, Dubai, Frankfurt, London, Moscow and New York. All projects created by Werner Sobek feature a winning combination of superior design and premium engineering, incorporating ingenious concepts to minimize the use of energy and material resources. In 2015, the company founder Werner Sobek was awarded the Fritz Leonhardt Prize for lifetime achievements.