Estudio geotécnico in San Cristóbal de La Laguna

In San Cristóbal de La Laguna, sandstones, conglomerates and flysch predominate, making up more than 80% of the geological substratum. These materials generally provide a good bearing capacity for foundations, although the occasional presence of expansive or soft white clays requires localised attention to avoid possible differential movements. Although less frequent, igneous rocks can offer excellent properties for direct foundations. In this setting, it is common to find perched aquifers or areas of variable permeability, which necessitates a detailed assessment of the water–soil interaction before defining the safest foundation type.

Seismicity in the municipality is very low, with only 6 recorded events over 30 years and a maximum magnitude (Mmax) of 2.2, so it does not represent a relevant constraint for structural design. There is no risk associated with karstification or with the presence of predominantly clayey soils, so, in general, the main aspect to control corresponds to the possible location of lenses of expansive clays of occasional occurrence, particularly in projects with shallow foundations.