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Abstract In the 1970s governments in Central and Northern Europe established thermal protection requirements, leading to the reduction of heat transfer through the building envelope. Subsequently, two different strategies were employed to decline the heat loss of exterior walls: the first relied on new or modified building materials that possessed decreased thermal conductivity than previously used materials; the second provided a special insulating layer. Concerning detail design, constructions with specialized layers still might appear to be simple but they are complex and fragile on construction level. This leads to the question: Is it possible to design details, which are simple concerning both appearance and construction? In this article I begin with the advantages and constraints of different exterior wall typologies within today’s legal restrictions in Central Europe. After that I focus on to the material lightweight concrete. As a key issue the analysis of different window positions within the wall (flush to the inside/outside wall or in the middle) is presented. Since the source of the investigation has architectural roots, constructive capabilities and design constraints are regarded, too. In the conclusion, future prospects of material development and the consequences for the detail design is given. Downloads Download data is not yet available. Author Biography Tim Lueking, FH JOANNEUM University of Applied Sciences Tim Lueking, was born in 1975 in Bielefeld, Germany and, since March 2014, has been employed as a senior lecturer at the FH JOANNEUM GmbH. Tim began his career as an apprentice carpenter, in order to gain practical skills within the building industry, after which he studied architecture at the Bauhaus University Weimar. After graduating in 2006 he worked as a freelance architect and as a project architect in an architectural office, to get experience of managing high-specification residential building projects. In 2008 he began working at Graz University of Technology at the Institute of Architecture Technology, teaching in the Bachelor and Master programme. Besides this he was an active member of several high profile scientific research projects. For his PhD-thesis he analyses the qualities and constraints of single layer building envelopes, as e.g. the advantages and disadvantages concerning detail design, embodied energy and recycling. References BAUS, U. Sichtbeton. Architektur, Konstruktion, Detail. Munich: Deutsche Verlags-Anstalt, 2007

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