Geotechnical study in Sant Sadurní d'Anoia

The substrate of Sant Sadurní d'Anoia is dominated mainly by sandstones, conglomerates and flysch sequences, which provides a competent and stable base for most shallow and semi-deep foundations. The occasional presence of fine sands, silts and compact gravels favours adequate bearing capacity, although in specific areas a detailed assessment of their degree of compaction and homogeneity may be required. The availability of hard materials such as limestones, dolomites and marbles, although less frequent, can serve as an excellent support for foundations subject to greater structural demands.

In terms of geotechnical risks, seismicity is considered very low in the area, with only 4 recorded events over 30 years and a maximum magnitude of 1.8, so the seismic impact on structural design is not significant. The non-clayey substrate virtually eliminates concerns about volumetric expansivity and there are no karstification conditions to consider. Therefore, the main factor to control will be the assessment of the compaction, continuity and permeability of the sand and silt levels where foundation supports are planned.