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Zniszczenie odwodnień powierzchniowych jedną z przyczyn destrukcji budowli zabytkowych

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Albrecht J.

Ochrona Zabytków

1990

issue 3

139-142

Damage of the surface dehydration of the structure may lead to its complete or partial destruction. However, this matter is quite often not taken into account either at the stage of conceptional work, or salvaging work. An example hare is the west wall of the Middle Castle in Malbork. This wall has broken off together with fragments of transverse walls and the vaulting from the rest of the building, creating an almost independent static arrangement. Its movement continues at the rate of ab. 2 mm a year, in the vertical as well as horizontal direction. From historical and contemporarv accounts it appears that intensification of the danger of this wall took place in three stages. In the 13th cent., the first failure known to us took place. Before this failure, the town was being expanded. Some houses were built next to the west wall. When the danger arose, these were disassembled and a street was built in their place. An intensification of wall cracking took place for the second time in the 19th cent., when during the castle reconstruction, certain changes were also carried out next to the walls. The salvaging operation consisted of the construction of an underground stone buttress, the installement of steel stays and the installment of a drainage gutter allong the wall, and somewhat later the digging of a drainage ditch. In 1960, because of the carried out work, the drainage ditch was filled up and office and storage buildings were put up. The contemporary salvaging operation consisted of the introduction of protecting systems, which did not halt destruction. The above facts point to the relation between the intensification of the wall destruction and the disturbances in the outflow of surface waters. The protection of wall should be based first of all on the elimination of the causes, that is, on the reconstruction of the surface dehydration system.

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1 Ochrona Zabytków

1 Albrecht J.

1 1990

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Zniszczenie odwodnień powierzchniowych jedną z przyczyn destrukcji budowli zabytkowych