Estudio geotécnico in Fogars de la Selva

In Fogars de la Selva, the ground is predominantly composed of granite, gneiss and other igneous rocks, which account for more than 60% of the substrate. This guarantees a high-strength, low-deformability base for the foundation of buildings. Compact gravels and sands, present in almost one third of the area, also provide good bearing characteristics, while the occasional presence of fine sands and silts is in the minority and should be assessed if they appear in specific interventions. The relative impermeability of these materials limits deep infiltration, although localised shallow aquifers may develop.

Seismicity in Fogars de la Selva is classified as very low, with only 9 recorded events over 30 years and a maximum magnitude of 2.6, so this factor is not a significant constraint in structural design. No risks associated with karst are identified, nor is there any presence of expansive clays, since the dominant substrate rules out expansivity problems. Accordingly, the main geotechnical control will be focused on verifying the continuity of the rock materials and the homogeneity of the ground to ensure the stability of foundations.