Estudio geotécnico in Sant Pere de Vilamajor

In Sant Pere de Vilamajor, the dominant subsoil is composed mainly of sandstones, conglomerates and flysch, accompanied by shales, schists and, to a lesser extent, gravels, compacted sands and outcrops of granite and gneiss. These formations generally exhibit low permeability, although localised shallow aquifers may occur. The presence of these materials implies a moderate to high bearing capacity, which allows the use of shallow foundations in most cases, provided that adequate compaction is verified and that there are no levels showing intensive alteration.

Seismicity in the area is very low, with only around 8 events in the last 30 years and maximum magnitudes below 3. In addition, there is no risk of karstification or problems associated with expansivity, given that the subsoil is not clayey. The main geotechnical constraint in this municipality is the structure and local compaction of each horizon; the continuity and possible alteration of the strata must therefore be assessed to ensure the correct design of foundations.