ABSTRACT
It is possible to distinguish three levels of strengthening related to levels of floors above cellar, ground floor and the first floor (with area of rafter framing). Relatively good technical state of cellar walls, despite thrust of vaults, caused that application of radical actions were not necessary. Strengthening of floor above cellar can be divided into two stages. The first stage included strengthening of building with using existing flanged beams I220 which were installed in time of earlier executed repairs. Those beams make up supports for concrete plates of floor, which should be executed with cavity above vaults in aim of reduction of their loadings. On the basis of constructional analysis of vaults and theirs technical state, it was assumed that their carrying capacity is sufficient to transfer loads from backfilling of the first storey floor, dead load and planned live load. The beams were used as strengthening tie rods and only steel anchors were added to its ends. The steel anchors were fastened in bearing internal and external walls. In the second stage strengthening anchors as a classical bracing anchors on a level under floors of ceiling above cellar were executed. In aim of relief of cellar floor ceramzit was applied stabilised by lime as backfilling of floor.
