The thesis deals with the use of hydrophilic mineral wool in green roof structures. In the first part of the thesis, based on current legislation, there are summarized relevant technical properties of the hydrophilic wool. Specific demands on the green roof parts were classified and the work was consequently updated by the research of available products from the national market. A large part of the thesis consists of the extended documentation of technical properties of new products and also the changes that are associated with ageing after the material incorporation into the structure. Not only the laboratory properties of the material itself, but also properties of the material embedded in green roof structure were measured, for example an acoustic capabilities. Water accumulation properties of the mineral wool were documented on the real roof models too. Various impacts were observed by using mineral wool in comparison with substrate assemblies. Additional experiments were applied on using different types of mineral wool for an assessment of specific green roof vegetation adaptation. The environmental product declarations for each mineral wool product were calculated with the specific software using LCA methodology. In this way, the environmental impacts of mineral wool could be compared with other materials, such as artificial substrates, foils, etc. As a conclusion of the research results were summarized and reported demands for the hydrophilic mineral wool use in the green roof structures.

Introduktion – Byggbranschen idag står för en betydande andel av jordensväxthusgasutsläpp och behovet för att minska dessa är stora. Att investera merklimatsmart i nybyggnation ökar och trä har blivit till ett alltmer populärt byggmaterialnär det kommer till flerbostadshus, men logistikhallar domineras fortfarande av stål.Studiens mål är att undersöka skillnaderna i kostnader och utsläpp av växthusgasermellan limträ- och stålstommar för logistikhallar. Detta för att undersöka om trä är ettekonomiskt rimligt och mer miljöeffektivt stommaterial vid byggnation avlogistikhallar än en stålstomme. Metod – Metoden som valts till studien är en fallstudie då den kommer omfatta bådeen teoretisk undersökning, granskning av kvantitativa data från ett tidigare projekt samtuppskatta storleken på en trästommes tvärsnitt genom simulering i endimensioneringsmjukvara. Kostnad och miljöpåverkan för en stål- och limträstommekommer att tas fram för att sedan kunna utföra en jämförande analys av de tvåstommaterialen. Resultat – Stommarna skiljer sig procentuellt sätt inte så mycket i pris menlimträstommen orsakar betydligt mindre växthusgasutsläpp jämfört med stålstommen.Kostnaden mellan stål- och trästommen skiljde sig knappt utifrån material- ochmontagekostnaderna. Stålstommen står för nästan sju gånger mer växthusgasutsläpp änlimträstommen under produktionsstadiet. I transportskedet har limträ en längretransportsträcka än stål i denna studie vilket är huvudorsaken till att limträstommenspåverkan på miljön är större än stålstommen i detta skede. Monteringsskedet harstålstommen en större miljöpåverkan än trästommen. Utifrån hela stommen under helabygg- och produktionsstadiet hade stålstommen fyra gånger mer i utsläpp änlimträstommen. Analys – Om priset på stommen är det huvudsakliga intresset hos byggherren bör inteen stålstomme antas vara det billigare alternativet. Denna studie har största spännvidderav balkar på 24 meter och vid större spännvidder kan förutsättningarna för val avstommaterial se annorlunda ut. Limträ är väl lämpat som stommaterial om ambitionenär att bygga med små mängder växthusgasutsläpp. Diskussion – Byggbranschen har en viktig roll i arbetet med att minskakoldioxidutsläppen och uppnå klimatmålen. Trots att trästommen som analyserats inteär optimalt utformad påvisar ändå studien stora miljömässiga fördelar att användalimträ som stommaterial i logistikhallar utan några större skillnader i kostnad. / Introduction – The construction industry today accounts for a significant portion ofthe Earth's greenhouse gas emissions, and the need to reduce these emissions issubstantial. Investing more climate-smartly in new construction is increasing, and woodhas become an increasingly popular building material, especially for multi-familyhouses. However, logistic warehouses are still predominantly dominated by steel. Theaim of this study is to investigate the differences in costs and greenhouse gas emissionsbetween glulam timber and steel frames for logistic warehouses. This is done toexamine whether wood is an economically viable and environmentally more efficientstructural material for constructing logistic warehouses compared to a steel frame. Method – The chosen method for the study is a case study, as it will encompass both atheoretical examination, a review of quantitative data from a previous project, and anestimation of the cross-sectional size of a timber frame through simulation in astructural design software. The cost and environmental impact of a steel and glulamtimber frame will be determined in order to conduct a comparative analysis of the twostructural materials. Results – The frames do not differ significantly in terms of price, but the glulam timberframe results in significantly lower greenhouse gas emissions compared to the steelframe. The cost difference between steel and timber frames was minimal based onmaterial and assembly costs. The steel frame generates almost seven times moregreenhouse gas emissions than the glulam timber frame during the production stage. Inthe transportation phase, laminated timber has a longer transportation distance then steelin this study, which is the main reason for the greater environmental impact of thelaminated timber frame compared to the steel frame at this stage. During the assemblyphase, the steel frame has a larger environmental impact than the timber frame. Acrossthe entire frame during the entire construction and production stages, the steel framehas four times more emissions than the glulam timber frame. Analysis – If the cost of the frame is the primary concern for the builder, a steel frameshould not be assumed to be the cheaper alternative. This study considers the widestspan of beams at 24 meters, and for larger spans, the conditions for choosing structuralmaterials might differ. Glulam timber is well-suited as a structural material if the goalis to build with minimal greenhouse gas emissions. Discussion – The construction industry plays a crucial role in reducing carbon dioxideemissions and achieving climate goals. Despite the fact that the analyzed timber framemight not be optimally designed, the study still demonstrates significant environmentaladvantages in using glulam timber as a structural material in logistic warehouses, withno major differences in cost.

This thesis is a comprehensive study describing and quantifying material flows of waste electric and electronic equipment (WEEE) in the Czech Republic; specifically the material flow of small waste electric and electronic equipment (s-WEEE) as well as representative substances. The studied material flows were estimated regarding aspects of the environmental impact. The End-of-Life mobile phone is seen as a typical representative of s-WEEE ; therefore material flows of mobile phones are described in this thesis as well. To put it in concrete figures, approximately 124 thousand tons of WEEE from households originated in the Czech Republic in 2010, where each inhabitant got rid off 4 pieces of WEEE in average. Further, total production calculating also consumer-like WEEE from companies and institutions was around 141 thousand tons in 2010. S-WEEE present around 15% from the total amount of WEEE originating in 2010; however it is more than 80% as regards the number of pieces. Despite of that fact the recycling potential of Au for instance is slightly higher by s-WEEE than by large WEEE (63kg/year compared to the 59kg/year respectively). As regards estimation of the total production of EoL mobile phones, around 45 thousand pieces originated in the Czech Republic between the years 1990-2000 and 6,5...

This thesis is a comprehensive study describing and quantifying material flows of waste electric and electronic equipment (WEEE) in the Czech Republic; specifically the material flow of small waste electric and electronic equipment (s-WEEE) as well as representative substances. The studied material flows were estimated regarding aspects of the environmental impact. The End-of-Life mobile phone is seen as a typical representative of s-WEEE ; therefore material flows of mobile phones are described in this thesis as well. To put it in concrete figures, approximately 124 thousand tons of WEEE from households originated in the Czech Republic in 2010, where each inhabitant got rid off 4 pieces of WEEE in average. Further, total production calculating also consumer-like WEEE from companies and institutions was around 141 thousand tons in 2010. S-WEEE present around 15% from the total amount of WEEE originating in 2010; however it is more than 80% as regards the number of pieces. Despite of that fact the recycling potential of Au for instance is slightly higher by s-WEEE than by large WEEE (63kg/year compared to the 59kg/year respectively). As regards estimation of the total production of EoL mobile phones, around 45 thousand pieces originated in the Czech Republic between the years 1990-2000 and 6,5...

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This master´s project deals with design of an office building nearly zero energy standard. My master´s project consists of three parts. In the first one I work on technical design of the office building. It is a three-storey building with partial basement. Vertical load-bearing system is partially made from monolithic concrete walls and partially from clay blocks walls. The horizontal load-bearing structures are made of monolithic concrete slab. All roofs are designed as flat roofs. In second part I design all technical equipment in this building. In the last part I compare three types of roof, photovoltaic power plants and evaluate their environmental impact. First type of PV power plant is made by monocrystalline solar cell, second one by polycrystalline solar cell and last one by monocrystalline solar cell with battery system. Environmental impact of these systems is evaluated in Open LCA software. All structures comply with the valid standards and regulations.