The object of the project is to design a pension with restaurant in a remote part of the city that fits into the landscape. The building can be divided into two sub-parts, a restaurant with a background consist of a reinforced concrete and the building with hotel rooms made up of mostly by wooden structures. The pension is covered with a flat roof with has no basement, contact insulated by heat insulation.

京都大学 / 0048 / 新制・課程博士 / 博士(工学) / 甲第18261号 / 工博第3853号 / 新制||工||1591(附属図書館) / 31119 / 京都大学大学院工学研究科建築学専攻 / (主査)教授 林 康裕, 教授 吹田 啓一郎, 教授 神吉 紀世子 / 学位規則第4条第1項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DFAM

Purpose: Sustainable construction in the construction industry is a constantly recurring topic on climate issues around the world. In Sweden the majority of the newly construction foundation is made of concrete, steel and reinforcement. To reduce these emissions wood materials can be used in the construction instead. And to increase the wood materials in constructions a wooden building strategy can be used. The aim with this report is to develop a comprehensive basic wooden building strategy for municipalities in Sweden. This will be achieved by analysing municipalities success in the specific area and take advantage of the knowledge of actors involved with the area. In this report the strategy and the way to the strategy will be presented.  Method: The method in this report are qualitative case studies and the collection method of the empiricism is literature surveys, document analysis and interviews.  Selected methods form the basis for analyzing Eksjös, Växjös and Skellefteå municipality's current wooden building strategies as well as the knowledge of a researcher and university lecturer, the collected data will result in developing a common basic wooden building strategy for municipalities in need.   Findings: This report has added new knowledge and shows how a wooden building strategy should be design based on the conditions of the municipalities and that the working methods vary and look different. The development process of the strategy is an important element that is decisive for how well the strategy works, in this process the content of the strategy as well as its vision and goals are discussed. A wooden building strategy should include requirement where follow-up can be done and show if the goals are achieved, also dialogues and contact should exist with the construction industries actors to increase wood construction in municipalities.  Implications: Swedish municipalities can motivate wooden construction though a wooden building strategy where, through commands, promises and strategies, they contribute to increase interest. The development process is one of the most important part of designing a building strategy. Municipalities that develop a wooden building strategy must have clear goals and visions with the strategy. Gathering knowledge is the key to a well-functional strategy where municipalities have a good dialogue and corporation with actors. In the development process it is recommenced that you influenced by the leading edge of various organizations and municipalities in the area and see its weak points and take note of its strong points. This contributes to a well-designed wooden building strategy.  Limitations: The study is mainly limited to multi-storey houses and wooden buildings in Sweden. Recommendations and conclusions, together with the empiricism, are the authors' own thoughts and ideas. The limitation of the work and the goal is that the municipalities cannot use the model directly but must adapt the content based on their own conditions and visions.  Keywords: Wooden building strategy, concrete, CO2, wooden building, wooden buildings Sweden, Strategy

Syfte: Det moderna samhället befinner sig i en miljökris där utsläppsnivåerna måste minska om den globala uppvärmningen skall begränsas till 1,5 Co . Byggsektorn står för 21% av Sveriges koldioxidutsläpp, 36% av den totala energianvändningen och 31% av allt genererat avfall. Forskningen visar att en ökning av andelen trä i nyproducerade byggnader kan minska koldioxidutsläppen. Denna rapport syftar till att kartlägga de faktorer relaterade till kompetensbrist som negativt påverkar ett framgångsrikt byggande i trä. Metod: Genom en litteraturstudie av befintlig forskning på området har forskningsfronten kartlagts och använts som utgångspunkt för studiens datainsamling. Primärdatainsamlingen är gjord som semi-strukturerade kvalitativa intervjuer. Empiri har analyserats tematiskt i syfte att finna de mönster som framträder i data. Resultat: Kompetensbristen hos beställare är den enskilt största faktorn som negativt påverkar ett framgångsrikt byggande i trä. För att beställare ska bygga i trä måste det vara ekonomiskt lönsamt. Kompetensbristen anses ligga i att identifiera de nya arbetssätten och utmaningarna som att bygga i trä medför snarare än att lösa problemen i sig. För att uppnå ett ökat framgångsrikt byggande i trä krävs en omställning hos alla aktörer. Störst och förmodligen svårast att motivera är den hos de stora entreprenadföretagen på grund av delägarskap i betongindustrin och företagens storlek. Konsekvenser: Genom att identifiera faktorer som negativt påverkar ett framgångsrikt byggande i trä, skapas ett underlag för en utveckling av det moderna träbyggandet och på så sätt ett bidrag till att minska byggsektorns miljöpåverkan. Rekommendation: Precisa beräkningsmodeller för trähus behövs för att kunna göra exakta kalkyler. En nyckelfaktor till att minimera den ekonomiska osäkerheten hos beslutsfattare är exakta kalkyler. Begränsningar: Något som eventuellt kan begränsa studien är den geografiska utspridningen, alla representanter kommer främst från södra delarna av Sverige. Detta gör att utspridningen inte är representativ för hela landet. Vissa discipliner inom branschen representeras endast av en respondent och ingen hänsyn har tagis till olika upphandlingsformers påverkan. / Purpose: The modern society is in the midst of an environmental crisis and carbon dioxide emissions must decrease if the global warming is to be limited to 1,5 Co . The construction sector in Sweden is responsible for 21% of the total carbon dioxide emissions, 36% of total energy usage and 31% of all waste. Research implies that by increasing the amount of wood in buildings the amount of carbon dioxide emitted can be reduced. This report aims to map out the factors linked to a lack of competence that hinders the progress of successful building with wood. Method: By performing a study of the existing literature on the subject the most relevant research can be converged and used as a starting point for the data collection part of this study. The primary data collection is conducted through semi-structured qualitative interviews. Empiricism was analyzed thematically with the purpose of finding patterns that present themselves in data. Findings: Developers that are lacking competence is believed to be the single greatest factor that hinders the progress of successful building with wood. If developers are to build with wood it has to be financially profitable. The lack of competence is believed to be connected to identifying the new work procedures and challenges that building with wood induces rather than solving the problem itself. If an increased usage of wood in construction is to be achieved all involved actors must readjust their practices. The greatest and probably the most difficult readjustment to motivate is the one that has to be made by the largest contractors because of their part-ownership in the concrete industry and the size of the companies. Implications: By identifying the factors that negatively affect the progress of successful building with wood a foundation for further development of modern wood construction can be established and assist in reducing the environmental impact of the construction sector. Recommendation: Precise calculation models for wood buildings are required for improving the accuracy of cost calculations. A key factor to minimizing the economic uncertainties of decisionmakers is accurate cost calculations. Limitations: The geographical diffusion of the study might limit its use. The respondents originate mostly from the southern part of Sweden. The diffusion might not be representative of the entire country. Some disciplines within the construction industry are represented by a single respondent and different forms of procurement has not been taken in to consideration.

This thesis deals with massive wooden buildings especially with regard to the current approach to their design, assessment and approval. In this thesis are shown future possibilities of development of traditional wooden buildings with regard to current thermal technical requirements. Theoretical considerations are then compared with measurements which were performed on massive wooden wall samples.