Estudio geotécnico in Torrelles de Llobregat

In Torrelles de Llobregat, soils of slate and schist predominate by a wide margin, accounting for 93.75% of the municipality’s land, whereas sandstones, conglomerates and flysch only occur occasionally. These materials generally provide an acceptable bearing capacity for shallow foundations, although their low permeability can affect natural drainage and favour surface ponding; for this reason, a specific study is usually required for the disposal of water and the prevention of structural damage associated with moisture.

Seismic activity in the municipality is very low, with only 3 recorded events over 30 years and a maximum magnitude of 1.6, so it is not considered a conditioning factor in foundation design. There are no risks associated with expansivity, as the substrate is not clayey. However, since this is an area where karst may be present, it is essential to verify this condition before planning any foundation, because the existence of cavities or dissolution processes can seriously affect ground stability and that of the future buildings.