Estudio geotécnico in Sant Llorenç d'Hortons

In Sant Llorenç d'Hortons, soils formed by sandstones, conglomerates and flysch predominate, which represents a low-permeability base at the surface, although aquifers may be found at greater depths. This lithological composition provides a solid and stable platform for the design of conventional foundations, generally offering good bearing capacity. Limestones and dolomites occur only in specific places, so they rarely significantly influence the choice of foundation type.

Seismic activity in the area is minimal, with just one recorded event in the last three decades and a maximum magnitude of 1.5, which allows seismic criteria to be ruled out as the main determining factor in construction projects. Expansive clays are present subordinately or in areas with low climatic risk, so the geotechnical risk associated with expansivity is considered secondary. Overall, the main focus in geotechnical studies should be on the detailed characterisation of the flysch and of the sandy and conglomeratic layers in order to establish the competence and homogeneity of the supporting ground.