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The roof structure of a bus station with facilities in Vrchlabí
Vondráček, Vít ; Hron, Lukáš (referee) ; Šmak, Milan (advisor)
The subject of bachelor's thesis is design and assessment of steel load-bearing construction of bus station in Vrchlabí. It is designed as a co-operating load-bearing steel pillar based structure with the construction of the outdoor platform. The design was considered in four different options for inner building. Followed was mainly the weight of inner structure with respect to the roof deck. The selected option is then incorporated into the scope of the entire structure. Design and assessment was conducted in accordance with the applicable standards and by using a computer program Scia Engineer.
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Testing of commercial rubber sealing components exposed to different ambient conditions
Jančaříková, Marie ; Poláček, Petr (referee) ; Bálková, Radka (advisor)
Diploma thesis studies the effect of temperature (75 and 105 °C) and the effect of 3 kinds of liquids (silicone and hydraulic oil and coolant) at room temperature and at 105 °C on change of the structure of 3 species butadiene-acrylonitrile (NBR) seals (o-ring and two types of bolts). The seals are inspected by the thermogravimetric analysis, differential scanning calorimetry and infrared spectroscopy, the influence of 105 °C on the o-rings is also evaluated in terms of changes in tensile properties. The greatest changes in the composition and structure are observed on o-rings particularly due to temperature of 105 °C, there was a significant reduction in dilatability and an increase in stiffness and glass transition temperature. The root cause is the surface and centre additive decomposition and oxidation. The bolts have suffered from decomposition of the protective surface layer and the additives in the centre, structural change was minor. Exposure to 75 °C has resulted in a gradual loss of low molecular weight substances. Liquids at room temperature didn‘t affect the structure of the seals, at 105 °C it caused a loss of weight due to decomposition of the protective surface layer and release of additives and the products of their decomposition. Results showed that the common use of the NBR seals at 105 °C is unsuitable, at 75 °C it leads to gradual changes, loss in mechanical and sealing properties.
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Furniture shop
Richtrová, Pavla ; Bukovská, Pavla (referee) ; Barnat, Jan (advisor)
The aim of this bachelor thesis was to design and assessment of the key elements of the supporting structure of the furniture store. Glued laminated timber of GL24h class was designed as the main material of the supporting elements. The construction is symmetry square layout 30x30 m. The roof structure has the shape of a pyramid with a slope of 15°. The top of construction consist of the corner rafters installed on the corner columns. The main reinforcing elements are columns and rungs, which form stiff knee and ensure the stability. Roof cladding is considered of the panels of insulating glass for the upper half and metal tiles for the bottom half of construction for the calculation. External cladding is designed of sandwich walls. Detailed composition roof and external cladding were not resolved within the work. Bachelor thesis consists of a static calculation in which the individual cross sections and their joints including anchoring are assessed, technical report and drawings.
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Testing of commercial rubber sealing components exposed to different ambient conditions
Jančaříková, Marie ; Poláček, Petr (referee) ; Bálková, Radka (advisor)
Diploma thesis studies the effect of temperature (75 and 105 °C) and the effect of 3 kinds of liquids (silicone and hydraulic oil and coolant) at room temperature and at 105 °C on change of the structure of 3 species butadiene-acrylonitrile (NBR) seals (o-ring and two types of bolts). The seals are inspected by the thermogravimetric analysis, differential scanning calorimetry and infrared spectroscopy, the influence of 105 °C on the o-rings is also evaluated in terms of changes in tensile properties. The greatest changes in the composition and structure are observed on o-rings particularly due to temperature of 105 °C, there was a significant reduction in dilatability and an increase in stiffness and glass transition temperature. The root cause is the surface and centre additive decomposition and oxidation. The bolts have suffered from decomposition of the protective surface layer and the additives in the centre, structural change was minor. Exposure to 75 °C has resulted in a gradual loss of low molecular weight substances. Liquids at room temperature didn‘t affect the structure of the seals, at 105 °C it caused a loss of weight due to decomposition of the protective surface layer and release of additives and the products of their decomposition. Results showed that the common use of the NBR seals at 105 °C is unsuitable, at 75 °C it leads to gradual changes, loss in mechanical and sealing properties.
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The roof structure of a bus station with facilities in Vrchlabí
Vondráček, Vít ; Hron, Lukáš (referee) ; Šmak, Milan (advisor)
The subject of bachelor's thesis is design and assessment of steel load-bearing construction of bus station in Vrchlabí. It is designed as a co-operating load-bearing steel pillar based structure with the construction of the outdoor platform. The design was considered in four different options for inner building. Followed was mainly the weight of inner structure with respect to the roof deck. The selected option is then incorporated into the scope of the entire structure. Design and assessment was conducted in accordance with the applicable standards and by using a computer program Scia Engineer.
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Furniture shop
Richtrová, Pavla ; Bukovská, Pavla (referee) ; Barnat, Jan (advisor)
The aim of this bachelor thesis was to design and assessment of the key elements of the supporting structure of the furniture store. Glued laminated timber of GL24h class was designed as the main material of the supporting elements. The construction is symmetry square layout 30x30 m. The roof structure has the shape of a pyramid with a slope of 15°. The top of construction consist of the corner rafters installed on the corner columns. The main reinforcing elements are columns and rungs, which form stiff knee and ensure the stability. Roof cladding is considered of the panels of insulating glass for the upper half and metal tiles for the bottom half of construction for the calculation. External cladding is designed of sandwich walls. Detailed composition roof and external cladding were not resolved within the work. Bachelor thesis consists of a static calculation in which the individual cross sections and their joints including anchoring are assessed, technical report and drawings.
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