Abstract
Repairs of historic buildings require the selection of such the design solutions to achieve the intended effects while ensuring the effectiveness of these repairs. This is particularly important in case of the structural failures of these facilities. Most of the conservation recommendations for renovations of cultural heritage buildings and monuments in Poland concern the preservation of the original building material, construction as well as the shape and appearance of the repaired facility [1]. The basic tasks for the designer who specifies the scope, methods and technology of the repair works is to ensure the building‘s safety of use and safety of its users while maintaining the conservation recommendations. The technical failure of the observation tower of the St. Anna’s Church, which took place after a relatively short period of time from the major overhaul of this facility, is presented in this paper. The scope of expert and design works as well as the scope for the contractor of the repair works, that are necessary to select the proper technological solutions for this case, are given. The diagnostics of the building carried out by the authors of the article allowed to properly determine the degree of damage. This ensured the suitable selection of the design solution and further replacement of the damaged cornice of the supporting structure of this historic church.
Highlights
During the post-war construction of the W-Z Route, a deep excavation was not properly secured
A decision was made to make a new waterproofing insulation with a flat roof of the tower building [4]. This design solution was in line with the recommendations indicated by the cultural heritage conservator, who clearly advised to take immediate actions to remove the cause of rainwater leakage into the masonry structure of the analysed building
It sometimes happens that the proposed solutions to the problem https://doi.org/10.10 51/matecconf /20192840500 2 of moisture are inadequate to the causes of damage and focus only on the historic aspect of the object [9]
Summary
During the post-war construction of the W-Z Route, a deep excavation was not properly secured. Despite the reinforcing of the supporting structure of the church and the foundation soil stabilization in 1949, the so-called micro-displacements were observed, resulting from the overlap of the traffic vibrations and landslip tendencies inside the escarpment. This resulted in a repeated net of permanent damage in the same parts of the walls after subsequent renovations of the façade. An important significance, especially for the proper state of preservation of the historic post-Bernardine complex, which includes a detached tower building, had unfinished issues regarding unstable statics of the facility The foundation of these buildings was disturbed due to the construction of the WZ route tunnel and the resulting transport vibrations. The formation of damage - scratches and cracks is caused by the difference of physical properties of built-in construction materials resulting from different values of linear expansion coefficients, and from variable resonance imbalances of transport vibrations transmitted by an unstabilized soil [4]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
