Abstract
The work describes the case of a single-family residential building, which suffered a breakdown due to flooding. Flooded water in the nearby watercourse, did not reach the building directly, but in its vicinity, but raised to a very high level the local groundwater table, which reached locally, even above ground level. This condition was maintained over a longer period of time, causing the soil moisture to rise, and thus its geotechnical parameters deteriorated. The consequence of this, the building underwent an uncontrolled and uneven settlement, which was accompanied by the formation of cracks on the walls. The effects of failure were presented and an attempt was made to identify possible causes of failure. Own study of the substrate was carried out in "in situ" conditions and verification of laboratory tests, and their results are presented on relevant charts and tables.
Highlights
Hydrological floods due to the genesis can be divided into four groups: rain, snowmelt, winter and storm
In the case of major changes, they cause difficulties, prevent the use of construction objects, engineering structures and may even lead to the exclusion of significant development areas from use. The probability of their occurrence is greatest in areas located along large river valleys, when the water rises to catastrophic levels, areas with complex geological structure, glacitectonically disturbed and man-made morphology
The geotechnical layers separated in the subsoil were characterized by variability in the organic matter content, due to which they were to varying degrees susceptible to changes in moisture and to the true values of geotechnical parameters
Summary
Hydrological floods due to the genesis can be divided into four groups: rain (type O), snowmelt (type R), winter (type Z) and storm (type S). The effects of typical (hydrological) floods visible immediately after their resignation are not the only ones It happens that they are accompanied by other effects delayed in time, being a consequence of another type of floods, so-called hydrogeological, which may lead to a change in soil-water relations. In the case of major changes, they cause difficulties, prevent the use of construction objects, engineering structures and may even lead to the exclusion of significant development areas from use. The probability of their occurrence is greatest in areas located along large river valleys, when the water rises to catastrophic levels, areas with complex geological structure, glacitectonically disturbed and man-made morphology. The paper presents a case study of a building failure, the occurrence of which is related directly and indirectly to locally occurring flooding
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