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Dendrochronologické datování vybraných zvonových stolic kostelů v regionu obce Boskovice a okolí jako nástroj pro doplnění české dubové standardní chronologie
Špidlík, Libor
This thesis is focused on the dendrochronology of the chosen bell headstocks in the churches in Boskovice region. This work describes the entire process of selecting churches, samplings, measurements and a tree-ring dating. The tree-ring dating was focused on the bell headstocks in the Church of St.Jacob Mayor in Boskovice, The Holly Trinity Church in Drnovice, the Church of St. Stanislav in Kunštát, the Church of St. Prokop in Letovice, the Church of St.Peter and St.Paul in Lysice and the Church of the Assumption of Mary in Sebranice. The found dates are compared with the awailable literature and internet sources. The chronology extends back 435years (1383-1818).This chronology was used to complete the Czech oak chronology CZGES 2016. Now the Czech oak chronology contains samplings from the entire location of natural occurrence of oaks in the Czech Republic.
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Dendrochronologické datování a stavebněhistorické hodnocení krovu kostela sv. Jakuba ve Staré Vsi u Bílovce (okres Nový Jičín)
Sochová, Irena
The aim of the thesis was to make a constructional-historical research and dendrochronological dating of the roof frame (truss) of St. James´s church in Stará Ves near Bílovce (the district of Novy Jicin). It is the case of the roof frame structure of hammerbeam type which was made from fir timber. The result of the dendrochronological analysis has shown that the trees used for the construction of the roof of the nave were fell down between 1712 and 1713. The trees used for the construction of the roof over the chancel were also fell down between 1712 and 1713. The oak bell stool could not be reliably dendrochronologically dated. The results of the dendrochronological analysis correspond to the historical development of the church found out from the literary and historical sources
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Modifikace barvy dubových dýh a její vliv na kvalitu lepení
Rozboril, Tadeáš
This master thesis based on experimental evaluation is focused on colour modification of oak wood veneers and its impact on bonding quality. Experiments were conducted on nanoiron treated oak wood as well as on untreated oak wood. By the experimental means was evaluated influence of treatment on wetting angle, bonding of surface layer and possibilty of impregnation of selected wood veneers in whole volume. Chosen modification didn´t effect selected assembly by loss of bonding quality.
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Porovnání klasických a současných povrchových úprav stavebně-truhlářských výrobků v exteriéru
Luňáček, Martin
This thesis compares the differences between the use of classical and contemporary treatment practices of woodwork surfaces in carpentry, focusing on wood products made of acacia, oak, and spruce. Ox blood and used automotive oil were used for classical surface treatment whereas water-soluable pigment paints were used for contemporary treatment practices; choices were based on various conditions, such as weather, wind, or cardinal directions. Changes of the surface conditions were monitored and form the basis of this thesis; experimental measurement of samples, which were exposed to exterior conditions for ten months, form the basis of research data. A set of samples which were kept under constant environmental conditions with no access to light were stored in a laboratory in order to provide a set of contrasting samples to samples exposed to exterior conditions.
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Dendrochronologické datování a stavebněhistorické hodnocení krovu kostela Nalezení sv. Kříže ve Staříči (okres Frýdek-Místek)
Limberg, Tomáš
The purpose of this bachelor work was historical exploration of church of Founded st. Cross in Staříč (district Frýdek-Místek) and determine type of used wooden, roof construction. At first phase was looking for profesional litarature, dealing with problematics of roof construction and history of roof construction and looking for historical information about begining of church. Dating roof was solved by dendrochology. Next phase was knowing used wood (anatomical analysis) all the samples was removed by pressler drill. After that was known fir, as used element in construction and oak, used for construction wooden stool. Fir was cut in (1772 and 1773), corently in fall or winter 1772, or in winter 1773 when this year start. Oak was cut down in (1771 and 1772), corently in fall or winter 1772, or in winter 1773 when this year start. It was 18th. century, so type of construction in this age was hambálková soustava. After comparing this informations with literature, we got result , that hambálek´s roof systém was used as roof construction for this church.Formula clause:Prohlašuji, že jsem práci: Dendrochronologické datování a stavebněhistorické hodnocení krovu kostela Nalezení sv. Kříže ve Staříči (okres Frýdek-Místek) vypracoval samostatně a veškeré použité prameny a informace uvádím v seznamu použité literatury. Souhlasím, aby moje práce byla zveřejněna v souladu s § 47b zákona č. 111/1998 Sb., o vysokých školách a o změně a doplnění dalších zákonů (zákon o vysokých školách), ve znění pozdějších předpisů, a v souladu s platnou Směrnicí o zveřejňování vysokoškolských závěrečných prací. Jsem si vědom/a, že se na moji práci vztahuje zákon č. 121/2000 Sb., autorský zákon, a že Mendelova univerzita v Brně má právo na uzavření licenční smlouvy a užití této práce jako školního díla podle § 60 odst. 1 autorského zákona. Dále se zavazuji, že před sepsáním licenční smlouvy o využití díla jinou osobou (subjektem) si vyžádám písemné stanovisko univerzity, že předmětná licenční smlouva není v rozporu s oprávněnými zájmy univerzity, a zavazuji se uhradit případný příspěvek na úhradu nákladů spojených se vznikem díla, a to až do jejich skutečné výše.
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Dendrochronologické datování a stavebněhistorické hodnocení krovu zámku v Miloticích (okres Hodonín)
Foltýn, Pavel
The subject of this thesis is the construction and historic evaluation of the age of the wooden truss structure of the State Chateau Milotice in district Hodonín using dendrochronological analysis. There are used procedures of the dendrochronological dating that is procedure of sampling the samples, their subsequent processing and dating. The work also includes construction and historical description of the building, to which have been used available documents form the Moravian Museum in Brno. Fir trees used for construction of truss were originated from the end of year 1721 or from the start of year 1722. From pine trunk was dated just one sample, which met the requirements of period after 1893. Beams of oak trunks were originated from two periods after year 1813 and after year 1943. Probably, fir elements of truss are original and the rest came from of following repairs. Dendrochronologically data analysis helped to specify the previously estimated history of the building, which has a big meaning in the planned reconstruction of the truss structure of the chateau.
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Povrchová úprava kuchyňských pracovních desek
Endlicherová, Veronika
This bachelor thesis deals with the problematics of kitchen worktops finishing. It evaluates the physico-mechanical, chemical, ecological, utility and visual properties of surface treatment of composite materials, wood-based materials and solid oak and cherry wood used for the manufacture of kitchen worktops. Solid wood samples were finished with a transparent polyurethane coating. In this research, the requirements for the surface finish of kitchen worktops were analysed. These materials are being compared in terms of physico-mechanical properties, as well as utility and appearance characteristics. The materials were subjected to tests in order to verify the resistances to cold liquids, wet heat, dry heat, falling bead, abrasion, scratch, steam, film hardness, surface gloss and color.
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Sestavení recentní dubové standardní letokruhové chronologie pro severní Moravu
Bužek, Stanislav
Theme and purpose of this diploma thesis was to compile a recent oak standard chronology for the region of Northern Moravia and to perform a dendroclimatological analysis. At three locations within the region of Northern Moravia, 195 samples from recent oaks have been collected using the Pressler increment borer. Tree-ring widths have been measured and processed in PAST 32 programme. From well-correlated tree-ring curves, a standard chronology has been successfully established with the range from 1895 to 2015. Removal of age-related trend from tree-ring curves and creation of residual standard index oak chronology has been performed in ARSTAN programme. Resulted residual chronology was used for modelling an impact of climatic variables on the radial increment in DendroClim programme, whilst also an analysis of significant negative years has been performed. Radial increment showed statistical and significant positive correlation with rainfalls occurred in last September and in March of this year. Thickness increment indicates statistically negative correlation with Palmer Drought Severity Index (PDSI) from April to August last year. The most significant negative years for radial increment, when more than 60% of all trees responded, were the following years: 1941, 1942, 1943, 1956, and 1998. These most significant negative years were caused by a lower rate of monthly rainfall accumulations and low temperatures during the growing season.
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Dendrochronologické datování a stavebně-historické hodnocení krovu kostela svatého Václava v Lukovanech (okres Brno-venkov)
Brázda, Ondřej
The object of this thesis is the dendrochronological analysis determinating the age of the wooden roof of the Roman Catholic church of St. Wenceslas in the village Lukovany in the district Brno - venkov. The thesis describes the standard dendrochronological process from sampling, its modifications and measuring up to the actual dating. In the text there can be found also constructional-historical development of the building. The chronological order of this development was created based on the literature review, field work and questionnaires. The trees used for truss were cut after 1810, the trees used for the bell tower after 1837. The dendrochronological dating and the analysis of the anatomical structure of wood helped to validate and to narrow some historical periods of the church. The results of this work can help managers and possible investors in the managing of the building, considered repairs and reconstructions.
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Numerický model celodřevěného konstrukčního spoje
Koutník, Daniel
The bachelor thesis deals with problems of all-wooden construction joint with wooden fasteners. Specifically, it is a plate joint with oak dowels and a pin which is stressed by pulling. To assess the overall response of the joint, it was necessary to experimentally determine the selected mechanical properties of oak (Quercus L.) on basic standard samples for pressure, pull, shear and bending. Determination of the relative deformations and displacements entering the calculations of the material characteristics was performed by the Digital Image Correction (DIC) method. The parameters thus obtained serve to: a) determine the material characteristics; (B) validation of the material model using basic numerical test models. For the subsequent evaluation of the overall response of the plate joint, it was necessary to assemble and verify an oak material model that allows the description of the elastic and plastic area of the working diagram. The validated bilinear elastoplastic material model has been successfully verified (% error = 7%) and implemented in a complex solution of the numeral plate joint with dowels and pin.
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