Geotechnical study in Casariche

In Casariche, the geological substratum is mainly dominated by limestones, dolomites and marbles, accompanied by areas of fine sands, silts, and sets of sandstones, conglomerates and flysch. Carbonate and sedimentary materials predominate, which generally translates into a good bearing capacity for building, provided that saturated layers of sand and silt are not encountered, as these could compromise local stability. Given the low permeability of the main formations, superficial aquifers are usually present in specific locations, which requires adequate hydrogeological characterisation prior to the execution of foundations.

The seismic activity recorded in Casariche is very low, with only 2 events in 30 years and a maximum magnitude of 1.7, which minimises the need for additional structural measures due to seismicity. However, the presence of karstification associated with the calcareous materials implies that it is essential to check for cavities or dissolution features beneath the site area before constructing the foundations. The non-clayey substratum rules out the risk of expansivity, so the main geotechnical precaution for the foundation design lies in thorough verification of the karst potential.