Estudio geotécnico in Móra d'Ebre

In Móra d'Ebre, sandstone, conglomerate and flysch soils predominate, complemented by layers of fine sands, silts, compact gravels and, in smaller proportions, limestones, dolomites, marbles and formations of gypsum, anhydrite and salts. This lithological set implies generally favourable bearing capacity for building, although the occasional presence of soluble materials such as gypsum and anhydrite requires careful attention during ground characterisation due to the risk of dissolution, making it a priority to avoid shallow direct foundations on these horizons. It is important to emphasise that sandy and conglomeratic soils tend to show good strength, although variability in grain size necessitates specific investigations to optimise the foundation type.

Seismic activity in the area is classified as moderate, with 30 events in the last 30 years and a low maximum magnitude (Mmax 2.5), so the seismic influence on structural design is limited. The absence of clayey substrates rules out the risk of ground expansivity. However, there is evidence of karst phenomena due to the local presence of limestones and dolomites, as well as possible voids associated with gypsum, making it essential to verify the karst before carrying out any foundations. The main geotechnical constraint is precisely the possible presence of karst cavities and soluble materials, which must be properly investigated in the geotechnical study prior to construction.