Estudio geotécnico in Olesa de Montserrat

In Olesa de Montserrat, the dominant geological substrate is made up of slates and schists, present in more than 30% of the area, together with sandstones, conglomerates and flysch that are also common. These materials generally provide a good bearing capacity for shallow or semi-deep foundations. Compacted gravels and sands, although less frequent, facilitate stable support, whereas fine sands and silts require careful assessment due to their greater compressibility. Areas of limestone and dolomite appear occasionally and may provide high strength, although their distribution is localised.

Seismicity in the area is very low, with only two recorded events in the last three decades and a low maximum magnitude (Mmax 1.6), so it does not represent a relevant constraint for structural design. No karstic areas are identified, and the absence of an clayey substrate eliminates concern about expansiveness in the soils. The main aspect to be assessed in local geotechnical studies is lithological variability, which is responsible for significant changes in bearing capacity between adjacent zones.