Global ETD Search

1	Uppföljning av träbyggnadsprojekt inom Växjö kommun / Monitoring of Wooden Construction Projects in the City of Växjö Johnsson, Ellinor, Malmqvist, Annie January 2015 (has links) Ett sekellångt förbud mot att bygga hus med trästomme högre än två våningar har gjort att värdefulla kunskaper om träbyggandet gått förlorat samtidigt som andra material istället etablerat sig på marknaden.För utvecklingen av flervåningshus i trä har Växjö blivit en förebild för andra städer i Sverige och resten av världen. Med denna studie vill författarna skapa en uppfattning om var i utvecklingen vi står idag samt tillvarata erfarenheter från fyra representativa projekt.Målet har varit att ta fram faktorer i produktionsprocessen som påverkar tid, kvalitet och ekonomi för flervåningshus i trä. Dessutom har det undersökts i vilken grad och på vilket sätt erfarenheter från tidigare projekt omsatts i senare projekt.Arbetet resulterar i ett antal punkter som är viktiga att ta ställning till vid en byggnation av flervåningshus med en träbaserad stomme. Dessa punkter berör bl a vad som behöver beaktas vid hög prefabriceringsgrad, varför och hur väderskydd bör användas samt hur sättningar påverkar en träbyggnad. Utvecklingen är starkt beroende av kontinuitet och av att fler hus av denna sort byggs. Detta skapar förutsättningar för att det skall gå snabbare och bli mindre kostsamt att bygga med trä. multi-storey timber construction timber frame wood buildings träbyggnad flervåningshus byggsystem industriellt byggande
2	Hållbart byggande : Hur nyproduktion i trä och betong i Sverige påverkar miljön samt beslutsfattares beslutsgrunder gällande materialanvändning Johansson, Stina January 2018 (has links) Environmental changes are great challenges that humanity must face. This has spurred a flurry of activities aimed to lower our impact on our environment. This essay focuses on the aspects that influence decision makers when choosing construction materials as well as a look into whether wood has a lower impact on the environment compared to concrete when building houses. The materials have been assembled through surveys, interviews and literary studies. The primary factor that was given most weight among entrepreneurs and architects were robustness and safety, and concrete was in that regard favoured over wood. It is also possible that already established economical structures support the use of concrete instead of wood. Environmental aspects are not reflected among entrepreneurs as very important factors when it comes to choosing materials and for change to occur there needs to be more information supporting that wood can be as robust as concrete in structures for it to be similarly prioritised. Concerning wood’s impact on the climate and the environment compared to concrete there is a significant difference in woods favour if only the construction and production phase of the house’s life cycle is examined. However, there are studies that show that depending on the material used and the time the house is expected to remain there are instances where wood has a higher environmental impact than concrete. Conclusively, wood is not always more environmentally friendly. The environmental impact of a material in construction depends heavily on the life span of the house. Sustainable construction Greenhouse gas emissions from buildings Environmental impact of construction Other Natural Sciences Annan naturvetenskap
3	Dřevostavby s použitím přírodních tepelných a zvukových izolací / Wooden buildings using natural thermal and acoustic insulation Ambrožová, Elena January 2016 (has links) Dissertation deals with the technical parameters of natural thermal insulation. In addition, there is a global trend in the construction of reducing energy consumption for heating, air conditioning, or with operating facilities in buildings and the use of perspective and efficient building materials with a negligible negative impact on the environment. Therefore, the attention not only professionals are increasingly turning to alternative materials, such as natural insulation, the material can be drawn from local sources and whose production is energy-saving and leaving a small ecological footprint. As part of the doctoral thesis were tested short term water absorption, measurements were made of the thermal conductivity and its change after the test short term water absorption. Was determined dependence of thermal conductivity on humidity and heat resistance was determined. Moreover a natural insulation applications in building construction with a comparison of the various technical parameters and environmental footprint. At the conclusion was made by acoustic insulation in timber construction and price analysis.
4	SUSTAINABILITY OF MULTI-STORY WOOD BUILDINGS : Can the Swedish forestry keep up with the demand? Kozak, Celine January 2023 (has links) Wood has been traditionally used as a construction material in Nordic countries such as Sweden dating back to the 12th century. Using wood as a building material for the construction of buildings with more than two stories became the norm around the 1850s and has only increased with the pressing need for more sustainable and environmentally friendly alternatives to materials such as concrete. The aim of this thesis is to bring attention to attitudes towards environmental, economic, and social sustainability of commercial multi-story wood buildings amongst industry professionals. Qualitative data was gathered through digitally conducted, semistructured interviews with six people from within fields related to carpentry, architecture, ecology, and forestry. Three buildings were briefly studied as a part of a case study on multi-story wood buildings: Fyrtornet in Malmö, Sweden, Sara Cultural Centre in Skellefteå, Sweden, and The Oakwood Timber Tower in London, England. The results showed that the practice of constructing multi-story wood buildings wasn’t sustainable because of the intense short rotation forestry pushing ecosystems to extinction. Wood was still considered to be a good alternative to carbon intense materials such as concrete. Limitations include relying on only qualitative data as the methodology, for future research the author suggests conducting a comparative Life cycle assessment (LCA) with a cradle-to-cradle approach, as a way to study environmental impacts of timber versus other natural materials available in Sweden such as clay, straw and hemp. Sustainability green washing multi-storey wood buildings clay climate change forest sweden case study life cycle architecture Hållbarhet Green washing trähus lera klimat skog sverige flervåningshus fallstudie livscykel arkitektur Building Technologies Husbyggnad Civil Engineering Samhällsbyggnadsteknik Architectural Engineering Arkitekturteknik

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