National Repository of Grey Literature 213 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Design nábytku denní potřeby pro rozvojové země
Ludvíková, Kateřina
Everyday furniture for developing countries is the topic that this diploma thesis deals with. The aim was to obtain input information, create a theoretical project and then verify it directly in practice in a developing country – Zambia. The project focuses on the use of wooden waste material and at the same time takes into account local conditions. The result of the work is research that collects basic data about joinery, schools, furniture and culture in Zambia. This theoretical project has been tested in practice on a small scale. At the same time, six prototypes of furniture were made from waste material and a development project on the subject was written.
Hodnocení přesnosti měření vlhkosti dřeva smrku při použití elektrického odporového vlhkoměru
Ondráček, Michal
This bachelor thesis focuses on the evaluation of the accuracy of spruce wood moisture measurement using an electrical resistance hygrometer. In the theoretical part, the basic properties of wood and its influence on moisture measurement are described. Furthermore, the different methods of measuring wood moisture are described and, above all, the principle of measurement using an electrical resistance hygrometer is discussed in detail. In the practical part, the moisture content of spruce wood was measured with three electric resistance moisture meters and the results were then compared with a reference gravimetric measurement method. Moisture meter No. 1 showed the most accurate results in determining the moisture content, but even it did not come close to the actual moisture content determined by gravimetry. Moisture meters 2 and 3 obtained identical measurements, but the measured moisture content differed significantly from the actual moisture content of the wood determined gravimetrically. These two hygrometers showed worse results than hygrometer No 1.
Návrh nábytkového solitéru s použitím dřeva a kamene
Borbélyová, Jozefína
The thesis deals with the design of table furniture for a public interior in the form of a solitaire. It highlights the importance of using sustainable materials, interprets the trend of returning to nature, emphasizing the use of given materials such as solid wood and natural stone. The work includes the design of a coffee table complemented by a collection of bar and dining tables as a possible transformation and use of design. The visual application of the theme is aimed more at the demanding customers asking for high quality solitaires for their hotel or café interiors. Therefore, the thesis deals with the analysis of individual materials, typology and ergonomics of table furniture, evaluation of the historical context and selected solutions from the present in the theoretical part. Finally, it summarizes the safety requirements and the legislation in force for the product in question. The practical part presents the all-encompassing design process, including variants, the final design itself, its justification, and conveys the entire production process of the prototype.
Ekologicky šetrné budovy - identifikace perspektiv pro zvýšení poptávky po dřevě a dřevařských výrobcích
Jedličková, Tereza
This bachelor thesis focuses on comparing and evaluating the certification systems BREEAM, LEED, SBToolCZ, and WELL in relation to the use of wood and wooden products in building constructions, and their potential impact on the assessment coefficient. The thesis describes how each system evaluates the use of wood, and the requirements for its sourcing and processing. The theoretical part of the thesis describes the basic properties of wood and wooden products, their advantages and disadvantages, and the ecological aspects associated with their use. The thesis also focuses on the ecological commitments of the Czech Republic, which increase emphasis on more sustainable construction and could support the hypothesis of the potential for increased demand for wood and wooden products in this area. In the practical part of the thesis, the individual certification systems are described, as well as the evaluation method and criteria for awarding certificates. Furthermore, the results of the comparison of the certification systems in terms of requirements for the use of wood and woo-den products in buildings are presented. In the conclusion, the results are summarized, and the ways in which the use of wood and wooden products can increase the chances of obtaining a certificate within each certification system are discussed.
Vliv reologických vlastností nátěrových hmot na transparetní povrchové úpravy
Karadinović, Ana
The master thesis deals with the influence of the rheological properties of coating materials on the surface finishing properties. The main rheological properties which were analyzed are viscosity and flow time of the coatings. Water-based, wax and polyurethane coatings were used. The aim was to determine the effect of temperature and dilution of the coatings on their rheological properties. Used coatings were prepared with different properties and applied on different substrates. Laboratory tests of physical-mechanical, chemical and visual properties were carried out. The influence of the rheological properties of the coatings on the properties of the surface finishing was analyzed based on the results of the laboratory tests.
Posouzení využitelnosti vybraných listnatých dřev pro výrobu kompozitu na bázi dřeva
Kašpařík, Matěj
The bachelor thesis deals with the issue of the possibility of replacing spruce wood in the production of OSB with hornbeam and birch wood. The purpose of the thesis is to compare selected physical and mechanical properties of OSB made of these woods with standardized properties of OSB. In the first part, the origin, characteristics and current use of OSB are presented. The second part deals with the material and methodology of all the tests performed. The following properties of the boards were investigated: moisture content, flexural strength and elastic limit, density profile, swelling, delamination and shear strength of the glued joint. In the third part of the paper, the results of the tests and their comparison with the standard requirements for OSB are presented, followed by a summary and discussion.
Využití materiálů na bázi dřeva pro výrobu umělých CubeSat satelitů na nízké oběžné dráze
Mládek, Martin
This bachelor thesis focuses on the use of wood and wood‑based materials in new potential industries such as space engineering, more specifically the production of panels for CubeSat satellites. Using a literature search, the historical and current use of wood and wood‑based materials in space engineering was summarized, while low Earth orbit, factors affecting low Earth orbit, wood, wood properties and wood‑based materials were described. The different acting factors in low orbit were compared with the properties of wood using sensitivity analysis. The resulting values of physical and mechanical properties were recalculated according to the described acting factors in low orbit. The resulting overstrains and applied thermal stresses were calculated using the relationships found. Based on the literature search, a suitable group of woods was selected, and the material index results were used to select suitable wood species. The suitable wood‑based material was selected using the observed criteria. From the results obtained, a potential panel composition of CubeSat satellite was proposed.
Architektonický a konstrukční návrh mobilního domu s využitím dřevěné konstrukce
Kucián, Kornel
This bachelor's thesis is focused on the architectural and constructional solution of the mobile home in variants of a wooden frame construction and a construction made of Cross Laminated Timber panels (CLT). The bachelor's thesis generally deals with the issue of wood as a construction material, its use in construction and the comparison of the selected construction systems. The work includes appendices with project documentation, static assessment, technical report, and an assessment of thermal technical properties.
Návrh bytového domu
Pardon, Dominik
The thesis focuses on the design of a residential building made of CLT panels. Nowadays, a high demand is placed on the ecological aspect of the building, therefore system of CLT panels is chosen in the thesis. The thesis takes into account the fire safety requirements of the building, a simplified fire safety assessment of the building is made. The thermal protection requirements of the building have also been taken into account and subsequently the thermal performance has been assessed indicatively. The design work itself consists of the design of a four-storey residential building with two shops on the ground floor. The documentation of the building is being addressed for planning permission.
Experimentální mechanická analýza konstrukčního prvku LSL s mechanicky diferenciovanými vrstvami
Jadrný, Radek
The thesis is focused on the use of alternative wood in the form of wood waste for the production of wood-based structural composite material. Adverse conditions lead to the deterioration of wood quality, thus generating a larger proportion of waste, which is very important to recycle in terms of storing harmful carbon. Therefore, this thesis deals with the production of the latest strand agglomerated structural material such as Intrallam (LSL) which is almost unavailable and unknown material for the country. For the experimental mechanical analysis of the LSL structural element with mechanically differentiated layers, spruce and larch wood strands were produced with parameters corresponding to those of commercially used strands with dimensional variation of 0.7 - 0.9 mm thickness, 20 to 50 mm width and 300 mm length. For the production of one LSL board, 90% of the strands with a fraction x > 10x10 mm and 10% of the strands with a fraction 5x5 < x < 10x10 mm were used. Larch (REF-MD) and spruce (REF-SM) reference Intrallam and Intrallam with mechanically differentiated layers (MDV) were produced for the research work. The surface layers of the MDV Intrallam were composed of larch strands and the core layer of spruce strands. To ensure excellent mechanical, physical and chemical properties, the LSL was bonded with polymer methylenediphenyl-diisocyanate (pMDI) at a strand moisture content of 7%. The manufactured LSL samples were subjected to mechanical tests – bending with DIC, internal bond strength, shear strength and compressive strength. The results showed that larch wood is a very favorable alternative wood species for the production of structural agglomerated materials.

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