Estudio geotécnico in Perales de Tajuña

In Perales de Tajuña, geotechnical studies identify limestone, dolomites and marbles as the predominant materials, accompanied by sandstones, conglomerates and flysch. These lithological strata, which are generally competent in nature, tend to provide a high bearing capacity, which allows conventional shallow foundations to be used provided that fracturing and alteration conditions are favourable. However, the occasional presence of gypsum, anhydrite and salts introduces a potential dissolution risk that can lead to subsidence, while the marginal occurrence of soft expansive clays is limited in extent. The widespread presence of aquifers and water bodies requires attention to the possibility of seepage and to interaction with the ground when designing foundations.

Seismicity in the municipality is notable, with 110 recorded events over the last 30 years, although the maximum magnitude observed (Mmax 3.5) remains within moderate ranges. The presence of karst phenomena is significant: before proposing any foundation, the existence of cavities or unstable levels associated with karstic dissolutions must be verified. Owing to the dominance of a non-clayey substrate, the risk of expansivity is ruled out, making the control of karst and the stability associated with the dissolution risk of evaporitic formations the main conditioning factor.