engleski

Application of Nondestructive Methods as Indicators of Damages on Historical Monuments (On Example of St. Lavrence Cathedral in Trogir)

Building of Trogir's Cathedral of St Lawrence (Sv Lovro) started in 119, and finished around 1500. The most notable features of the church is an Romanesque door caned around 1240 by Master Radovan. The Cathedral features a 14th century bell tower 4' m high. In the Cathedral is the Renaissance Chapel of St. Ivan. The decorations within the chapel were created from 1461 to 1497 by Firentinac and Duknovic. On the walls of the Cathedral multiply repaired fissures were noticed. These fissures are still existent. As it was decided that the construction needs a major repair. the works were preceded by instrumental monitoring of most obvious fissures. At the same time, air temperature and humidity within and outside the construction were measured. Devices used enable permanent reading of the fissure parameters, but the readings are taken only with period of one day or less. Devices were set up by the Italian Company SER.CO.EC. of Trieste. Monitoring was organized and conducted by regional office of the Croatian ministry of culture in Split. At first observations were recorded daily, but as it was found out that this was too frequent, this frequency was reduced. Initially, eleven sensors were used. Recorded data are presented as statistically observed time series. The results of this observations points on issue of the fissures. Some where connected with air temperature, some with past reparations works on construction.

Nondestructive testing; Trogir chatedral; Historical monument; damages

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