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EN
The article deals with ceilings composed of vaults based on small height masonry arches. It considers the co-operation of arches and vaults and distinguishes two construction configurations: one, in which the vault is based on a wall above the arch, and the other, in which the vaults are partly supported by the wall and partly by the keystone fragment of the arch; in the latter case, the vault and arch co-operate in shifting the burden. Such co-operation makes it feasible to increase the load borne by the ceiling by 20-50 per cent. The possibility of taking arches and vaults into consideration is of essential significance for conservation since it permits the avoidance of a rash discharge of the vaults with the aid of steel bars or reinforced concrete additions. The author presents a statical analysis of the problem, formulae for practical calculations and an example of determining the bearing power of the ceiling.
EN
The church examined in this article was built in the first three decades of the eighteenth century as a consequence of the redesigning o f a burgher house which belonged to the prosperous Swidwa-Szamotulski family o f Great Poland. Legend claims that the erection o f 1399 was accompanied by a profanation o f three Hosts, stolen from a Dominican church. The article describes the legend o f the three Hosts and the history and treasures o f the church. The author proposes a detailed presentation o f the construction o f the building and its state o f preservation. The unsatisfactory technical state o f the roof truss, cellar ceiling and walls is caused by moisture. The church construction and elements o f outfitting, primarily the cellars, call for urgent repair.
EN
The decision to renovate the vaulting of the Sistine Chapel was undertaken in 1 980. Due to the increasing air pollution in Rome and the loosening of the wall plaster, there was fear that certain parts of Michelangelo's painting would be damaged. The preservation work was planned for 12 years and assigned to one conservator, head of the studio for the preservation of paintings in the Vatican Museum - Gianluigi Collaluci. The current preservation work is in fact the third undertaking in the chapel's history that aims at a thorough cleaning of the vaulting. It is also the first for over two centuries and was preceded by thorough laboratory studies of the frescoes. The results of these studies made it possible to work out the proper techniques and methods of preservation. Already at the moment of setting up the scaffolding underneath the vaulting, questions arose whether the painting work should be submitted to preservation measures, or whether these would cause irreversible changes. As subsequent scenes were uncovered by the conservators, the discussion became more heated. The author of the article gives many arguments of the opponents as well as supporters of the current preservation methods. A full evaluation of the effects of these undertakings will be possible only with their completion, when the entire vaulting can be viewed.
EN
In 1616 Stanisław Lubomirski founded the town Wiśnicz as a private town, a centre of vast latifundium in Cracow region. In 1620 he provided the funds to build a new stone-wall parish church which was consecrated in 1647. In the great fire of the town in 1863 the wooden buildings of the market square and the town hall were burnt down. The church, its belfry, rafter framing and parish archives also suffered from the fire. The presbytery of the church is semicircular, with adjacent vestibule, vestry and a small treasury. The nave is wider than the presbytery, rectangular and elongated of mannerist proportions with later addition on the east. Outside the nave there are buttresses in the form of giant volutes. Two-storey western elevation of the church is divided in its lower part into three fields of different widths by pilasters. In the middle field there is a portal with the coat-of-arms of Szreniawa in the pediment broken along the axis. The Palladian openings and conch niches are placed regularly. The upper storey, narrower, finished with a flattened arc is framed by a small volutes. Low pinnacles finish the part of the façade. The baroque forms in the façade are placed in a mannerist manner. The façade is divided by a huge mould separating the colossal pilasters from the gable divided in a different rhythm. The pilasters of the upper storey and towers are off the axes of the lower storey pilasters. The flat and linear architecture is supported by huge, almost bulging base. The barrel vault is emphasized by conspicuous entablature, and the interior is homogeneous in character. The elegant composition with few sculptural elements reminds one of the Carmelite church interior. In the façade the elegant forms are combined with sculpturally exaggerated ornamentations and the outline of framing is mannerist. Andrea Spezza, of Italian origin, probably architect of parish church in Wiśnicz, executed the baroque architecture in a very individual way but with strong mannerist impressions. The eastern frontage together with the parish church are a basic elements of the architectural complex of the former Carmelite monastery and castle, which dominate in the Wiśnicz skyline. Therefore its arrangement must be regulated, and the view of the parish church façade exposed. Translated by P.S. Szlezynger
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