Estudio geotécnico in Olost

In Olost, the dominant substrate is made up mainly of sandstones, conglomerates and flysch, which provides geotechnically competent and resistant soils. These lithologies have an adequate bearing capacity for most shallow foundations, especially when the formations appear little altered or weathered. The permeability of these materials is generally low at the surface, although they may host aquifers at greater depth; this information can influence the design of drainage or retaining systems during construction.

Seismic activity in Olost is very low, with hardly any recorded event every thirty years and low magnitudes (Mmax 1.8), so seismicity does not represent a relevant technical constraint for the geotechnical study. Although there are subordinate expansive clays, their presence is sporadic and not associated with serious climate-related risks; therefore, the potential expansive effect in soils can be considered secondary in comparison with the overall quality of the substrate. The main constraint in this municipality lies in the accurate characterisation of the structure and degree of alteration of the sedimentary formations present.