Geotechnical study in I save

In Guardo, the subsoil is mainly made up of compact gravels and sands, which provide good bearing capacity, facilitating the design and execution of conventional shallow foundations. Occasional levels of sandstones, conglomerates and flysch-type units are also identified, along with smaller occurrences of limestones, dolomites and marbles, which allows for a varied foundation approach. The presence of silts and peats in certain areas is a drawback, since these compressible soils must be avoided as a structural support base due to the risk of differential settlements.

The area shows notable seismicity, with 57 events over 30 years and a maximum magnitude of 4. Although it does not reach critical thresholds, this level of seismic activity does recommend that it be taken into account in structural calculations, especially in projects of a certain scale. As the subsoil is non-clayey, the risk of expansiveness is ruled out as a conditioning factor, which simplifies the geotechnical approach. In conclusion, the main factor to analyse in Guardo is the presence of localised soft soils and the moderately seismic behaviour of the ground.