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The study of the behavior of track chassis using dynamic simulation
Kukla, Lukáš ; Kašpárek, Jaroslav (referee) ; Jonák, Martin (advisor)
Objectives of the thesis is to develop research summarizing knowledge about the types of tracked undercarriages for existing mobile machines. Developing critical analysis of the various designs of track undercarriages with regard to their use - forest terrain, unpaved surface. Creating a basic structural design of one of the selected type of belt chassis suitable for use in the field. Verification by the design using dynamic simulation.
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Studying the behavior of concrete at high temperatures
Čonka, Ladislav ; Sitek,, Libor (referee) ; Bodnárová, Lenka (advisor)
The thesis is focused on the current issues of concrete resistance to high temperatures. The theoretical part has been processed the changes taking place in the individual components of concrete and changes affecting the physical - mechanical properties of concrete and color-changing effects manifesting high. In the experimental part of the load was, carried concrete test samples to a temperature of 400 ° C, 600 ° C and 800 ° C. After the thermal load, has been on test samples tested changes in physico - mechanical properties, especially concrete compressive strength, water absorption but also a visual assessment of the concrete surface
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Evaluation of the investigation of fire causes in big accidents
Kavka, Martin ; Vojtěchovský, Filip (referee) ; Valášek, Rudolf (advisor)
The objective of this work is analysis of current status in the sector of detection of the causes of fire in the Czech Republic, including embedding of this activity in legislation, make an overview of major fires in the Czech Republic in recent 10 years and make a statistic of fires, which caused damages exceeding CZK 5 million. Evaluate these events in terms of causes of fire. Next objective of the work is analysis of the hazard and expected specialities on the investigation spot of fire causes and evaluate the differences in procedure of investigating causes of fires in terms of major events. It solves the activities and cooperation of investigator of causes of fires with commander of intervention and unit with respect to maintaining of stops for consequent documentation and investigation. Make a design for equipment for investigator of causes of fires and make a design for protection against hazard which is on the place of intervention.
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Valuation of total damage to a house caused by fire
Hornychová, Michaela ; Nykodýmová, Veronika (referee) ; Šmahel, Milan (advisor)
The aim of the Thesis is to determine the amount of indemnity for the total damage caused of the wooden detached house caused by fire, find out the costs of bringing the property to its original state and evaluate the price of the original and after an insured event the newly established building. The theoretical part is devoted to the basic concepts and methods in the field of real estate valuation and insurance and the liquidation of insurance events. On the introduction and theoretical part is followed by a practical part in which I apply the theoretical information on the real, by fire stricken the wooden family house, I approach the location and describe the building technical condition before and after the occurrence of the insured event. I find a new price of the real estate at the time of approval, the current price before and after the occurrence of the insured event and the new price of an identical family house without the structures which have been preserved and have not been damaged by the fire or fire-fighters. At the conclusion of the Thesis is the insured value of the building after repair of damage compared with the insured value just before the occurrence of the insured event.
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Structural Analysis of Steel Members in Fire
Runštuková, Monika ; Kytýr, Jiří (referee) ; Gratza, Roman (advisor)
This thesis deals with solution of steel members under fire conditions. The goal of the thesis is to examine and compare unprotected steel members with steel members protected by different types of passive protection. Calculation is performed according to applicable design standards. ANSYS software is used for thermal and structural analysis.
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Testing of arc protection AFDD during normal and fault conditions
Křepela, František ; Dostál, Lukáš (referee) ; Kaser, Jakub (advisor)
The bachelor´s thesis deals with AFDD, a device that protects the low voltage electrical installations against fire caused by a serial or parallel arc fault. Although MCB and RCD can mostly disconnect the circuit when the parallel arc appears, only AFDD can detect the series arc fault. AFDD can be used only as additional protection. The theoretical part of this thesis describes the creation of electric arc, causes of house fires, and explains the principle of the Arc Fault Detection Device. The purpose of the practical part is to create real malfunctions that cause a series arc in the circuit and to test the function of AFDD. The next purpose is to repair the arc generator and to verify the function of AFDD using different materials of electrodes.
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Service and fire ventilation in undeground car parks
Volný, Marek ; Sánka, Imrich (referee) ; Weyr, Jan (advisor)
The diploma thesis deals with smoke and heat ventilation systems in underground car parks. In the theoretical part of the thesis, legislative and standard background is described. The theoretical part also contains description of fire dynamics simulation methods and effect of carbon monoxide on human health. The practical part includes the design of service, smoke and heat ventilation systems in the selected building. Functionality of particular design is verified by FDS simulations.
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Natural biomass burning and character of emissions of these processes
Maňo, Martin ; Köbölová, Klaudia (referee) ; Chýlek, Radomír (advisor)
This bachelor thesis deals with the issue of emissions from natural biomass fires. Emphasis will be placed on aerosol emissions that occur during these natural phenomena. The introduction will discuss in general the natural fires of biomass in the world and their impacts. The next part of the work will investigate the factors that affect the composition, size and composition of aerosols, as well as their impact on living organisms and the environment. Methods will also be described for determining whether an aerosol trapped in the environment is of anthropogenic or natural origin. In the last part, the author will deal with the analysis of data from the measurement of real biomass combustion, in which he will participate
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Cathedral today
Kovář, Martin ; Mléčka, Jan (referee) ; Štěpán, Marek (advisor)
The content of the work is ideas solution for the roof of the Notre-Dame in Paris, after the destroying fire in 2019. Main idea is to create garret space for spiritual people, which used to meet, study and pray without the contact with the tourists and fill in the gap after the old tower above the crossing. Concept based on the original garret, which was only for service. The idea is coming especially from the simplicity and effectivity of the old garret and pointing on some of his elements. Space under the roof should be simple according to the first floor of the cathedral. The function is reflecting simplicity of the spaces with the respect to historical cathedral. Garret is designed for spiritual people, who are working in Notre-Dame and makes a space for them, which will be calm place for meditation. For this purpose are there cells for individual studying, library, common space and chapel. Connecting and meeting point in the same time between the ground, garett and higher power is sanctuary. This part is getting light to the ground floor.
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