Estudio geotécnico in Santa María de la Alameda

In Santa María de la Alameda the subsoil is composed fundamentally of granite, gneiss and other igneous rocks, with a secondary presence of shales and schists. These lithologies provide a solid and stable base, with very low deformability and high bearing capacity, which allows conventional shallow foundations to be used in most cases. The reduced permeability of these materials significantly limits water infiltration, but in some areas superficial aquifers may be found hosted in fractures, which could require complementary hydrogeological characterisation.

Seismicity in this municipality is very low, with barely a recorded event every 30 years and a maximum magnitude of 1.5, so the seismic risk is practically negligible in terms of structural design. Since the subsoil is not clayey, the risk of expansivity is ruled out. The main geotechnical limiting factor in Santa María de la Alameda derives from the presence of intact or weathered rock as a bearing level and the possible existence of water in discontinuities—aspects to be assessed for an appropriate foundation.