Estudio geotécnico in Ullastrell

In Ullastrell, the dominant geological substratum consists of sandstones, conglomerates and flysch—materials that usually provide good bearing capacity and make it easier, in most cases, to select direct shallow foundations. The high permeability of these soils, favoured by the presence of extensive and productive aquifers, requires assessing control of the groundwater table in order to avoid potential impacts on the foundations, especially in works involving deep excavation.

Seismicity in Ullastrell is very low, with only 1 recorded event every 30 years and a maximum magnitude of 2.6, so it does not represent a significant constraint for the design of buildings. Although expansive clays occur in a subordinate or localised manner in climatic zones without an annual deficit, it is advisable to detect their presence during the geotechnical study to avoid surprises regarding the ground’s volumetric behaviour. The main aspect to analyse will be the interaction between the groundwater table and the choice of foundation level.