Estudio geotécnico in Valtierra

In Valtierra, the predominant ground is composed of sandstones, conglomerates and flysch, accompanied by significant areas of compact gravel and sand. These materials generally provide adequate bearing capacity, favouring alternative direct, shallow foundation solutions in most cases. However, the occasional presence of gypsum, anhydrite and salts may increase the risk of dissolution processes, which requires a specific geotechnical study to rule out pathologies associated with these materials. The high permeability of the aquifers and the presence of masses of water can also affect the depth and the most appropriate construction technique.

In the seismic context, Valtierra records a high number of events (200 in 30 years), with an estimated maximum magnitude of 5.2, which implies that seismic hazard must be taken into account during the structural design calculation phase and when selecting foundation solutions. The existence of karst phenomena must also be checked before designing key supports, given the potential of the ground for the formation of cavities or dissolutions. The absence of clayey materials rules out the risk of expansivity, but the fundamental factor is the combination of significant seismicity and possible karstification or dissolution processes associated with the gypsum.