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Safety of the redevelopment with regard to the load-bearing capacity of the foundations

Szeląg Romuald, Baryłka Adam

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych

2024

Nr 4

123--130

During the reconstruction of engineering structures, quite often loft spaces are adapted for utility purposes or new storeys are added. The process is accompanied by the necessity of proper implementation of structural elements‘ reinforcement or repair of damaged elements, which results from increased loads, changes in the function of rooms’ use, application of new technological requirements. Each comprehensive assessment of the structural systems also requires checking the condition of the existing foundations so as to ensure that the new loads can be safely transferred to the subsoil. Insofar as there is a need to intervene in the construction of foundations, the process of performing reinforcement proves technically responsible due to the direct interference in the zone of interaction of structural elements with the ground under direct load conditions. The process becomes considerably more complicated if the subsoil contains silty sands or fine sands, which turn out to be unstable under the conditions of interference with foundation zones. It proves necessary to carry out analyses of the effective reinforcement of the foundations correctly and safely throughout the construction period. Each time the works are carried out effectively, they should take into account any instability that may occur in the individual stages so that the final execution process is carried out under safe conditions for the entire structure.