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Prestressed concrete slab of library
Slezák, Lukáš ; Perla, Jan (referee) ; Požár, Michal (advisor)
The diploma thesis deals with the design of the over-tensioned ceiling slab above the 1st floor of a two-story library building. It is a locally supported slab using prestressing. The analysis of internal forces is carried out by manual calculation using the method of sum moments and using the SCIA Engineer 22.0 calculation software, which uses the finite element method. The design is made according to the ČSN EN group of standards.
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Static analysis of a lattice prestressed truss
Slezák, Lukáš ; Svoboda, Adam (referee) ; Zich, Miloš (advisor)
The aim of this bachelor thesis is to calculate the pre-stressed truss for the given layout and possible design of reinforcement. The calculation of the load effects has been carried out by means of manual calculation using the contact method, scia engineering software and using type treasures. Subsequently, the effects were compared. The assessment of the ultimate limit state and serviceability was carried out manually according to the applicable standards.
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Estimation of winter wheat yield using machine learning from airborne hyperspectral data
Švik, Marian ; Pikl, Miroslav ; Janoutová, Růžena ; Veselá, Barbora ; Slezák, Lukáš ; Klem, Karel ; Homolová, Lucie
Methods based on optical remote sensing allow nowadays to assess crop conditions over larger areas. The assessment of crop conditions and potential estimation of crop yields in the early growth\nstages can help farmers to better target their management practice such as application of fertilizers. In this study we analysed airborne hyperspectral images acquired several times during the growing season over two experimental sites in the Czech Republic (Ivanovice and Lukavec). The field experiments on winter wheat included 12 levels of fertilisation (combination of organic and mineral fertilisers). Such an experiment design and the possibility of combining the data from two sites together increased the variability in our wheat yield dataset, which varied between 2.8 and 10.0 t/ha. Further, we used a machine learning method – namely gaussian process regression from the ARTMO toolbox to train two variants of models: a) combining the spectral data from both sites and from the multiple acquisition days and b) combining the spectral data from both sites for individual acquisition days.The results showed that it was feasible to predict wheat yield already at the beginning of April with R2 > 0.85. This promising result, however, requires more thorough validation and therefore we plan to include more data from other sites in the next steps.
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Static analysis of a lattice prestressed truss
Slezák, Lukáš ; Svoboda, Adam (referee) ; Zich, Miloš (advisor)
The aim of this bachelor thesis is to calculate the pre-stressed truss for the given layout and possible design of reinforcement. The calculation of the load effects has been carried out by means of manual calculation using the contact method, scia engineering software and using type treasures. Subsequently, the effects were compared. The assessment of the ultimate limit state and serviceability was carried out manually according to the applicable standards.
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Projekt roubené dřevostavby
Slezák, Lukáš
The topic of thesis is design and description of the realization block house on a particular ground. The house meets requirements for yearround use by a fourmember family. The text part describes the process of desig, implement and construction modern block house from BSH prisms as it would be with a real project. At the same time, there are pointe out specifics for given structural system. For object, is drawn up budget, focused on parts of the timber structure. There are also discussed possibilities of waste water management adequate for family house. Problematics of architectural visualizations is furthermore discussed.
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