Poznámky k problematice interiéru nezděných staveb středověkého Brna (konfrontace archeologických poznatků a mikromorfologické analýzy podlahových úrovní vybraných staveb)

The study summarises the basic findings regarding non-masonry buildings in medieval Brno and the prospects for further knowledge. A modern methodological approach in the form of micromorphology in an archaeological context, particularly regarding the interiors of these buildings, was used to add more information. From more than 200 micromorphological samples taken in Brno since 2008, a total of 16 from five sites in the historical centre of the city were selected for this partial study. Temporally, this concerns the period between the early 13th and the mid-14th centuries. The basic outcome of the study is the analysis, interpretation and division of the samples into typological groups. Based on typical features, sunken parts of the structures used for a relatively long time could be divided from the above-ground structures even though in some cases the “floor sandwich” had been partly removed due to ongoing maintenance. Finally, the results were confronted with a macroscopic observation by an archaeologist and with ethnographic knowledge. It was possible to identify the more detailed microstratigraphy of the floor sandwiches than by macroscopic observations in most cases and therefore specify the interpretation of the origin of the floor sandwich.

Crack resistance of masonry walls

Computer models used in the design calculation of masonry buildings sometimes fail to correctly take into account the stress-strain state of walls and assess the likelihood of cracks caused by the deformation differences of interacting walls.Following the construction of a building, cracks can develop at wall intersections for several years. However, their repair is mostly ineffective until the total damping of masonry creep deformation.Drawing on the analysis of conducted research and field data, the authors give recommendations on ensuring the crack resistance of internal masonry walls.

Strengthening of building structures of historical masonry buildings in Syria with carbon fiber reinforced polymer (CFRP) rods and stainless steel helical rods

The article presents the most innovative methods of strengthening and (or) seismic strengthening of masonry for use in historical buildings that are of architectural value, for example, in old mosques in Syria, which are architectural monuments. These methods are designed to protect such buildings, many of which are of architectural and cultural value and are on the UNESCO World Heritage List, from cracks of various sizes and directions and from the negative effects of earthquakes that can occur at any time. Carbon fiber reinforced polymer rods (CFRP) rods and stainless steel helical rods are considered. Two mosques in Syria are briefly described as examples of historical masonry buildings, which are architectural monuments and objects of cultural heritage. In the end conclusions are drawn.