Estudio geotécnico in Sant Martí de Tous

In Sant Martí de Tous, the predominant soils are formed by sandstones, conglomerates and flysch, which implies the existence of a substratum with good compaction and consistent mechanical properties. These materials generally provide adequate bearing capacity for conventional constructions, although the particular characteristics of occasional layers of limestones, dolomites and marbles must be considered, as well as the localised presence of gypsum, anhydrite and salts. This latter group entails a certain risk of dissolution processes, which could affect the stability of the foundations if they are not correctly identified during the geotechnical study. The moderate-to-low permeability of these ground conditions limits infiltration, but allows for the existence of seasonal shallow aquifers.

Seismicity in the area is very low, with only 8 events over the last 30 years and a maximum magnitude of 1.7, so it does not represent a relevant constraint for structural design. In addition, the absence of clayey substrata rules out the possibility of problems arising from expansive soils, minimising the risk of harmful swelling or shrinkage. In summary, the main factor to consider in geotechnical studies for Sant Martí de Tous will be the detection of zones containing gypsum, anhydrite and salts, to ensure that dissolution risks do not affect the foundation solutions adopted.