Estudio geotécnico in Piedrabuena

In Piedrabuena, slates and schists predominate—metamorphic materials that provide good stability and bearing capacity for foundations—although their low permeability and possible local fracturing must be evaluated in detail. Gravel and compacted sands are also fairly common and are suitable for foundation design due to their high strength, whereas the occasional presence of fine sands and silts requires particular attention to hydraulic behaviour. Hard clays and marls provide stable mechanical behaviour and can sustain significant loads, although their localised nature makes a specific investigation advisable to determine their suitability as a bearing stratum.

Piedrabuena is located in an area of high seismicity, with a considerable number of recorded events and an estimated maximum magnitude of 5.1; therefore, structural design must be adapted to this constraint. The presence of karstic formations implies the need to analyse potential voids and subsidence prior to carrying out foundations. Given the non-clayey nature of the predominant subsoil, risks of expansivity can be ruled out in most sites. The main constraint for the geotechnical study in Piedrabuena will be assessing possible karst activity alongside compliance with seismic requirements.