Geotechnical study in La Alberca

In La Alberca, the subsoil is dominated by slates and schists, materials characterised by low permeability and generally favourable bearing capacity for properly designed shallow foundations. Fine sands and silts may appear in a limited, localised way, providing moderate bearing capacity and some sensitivity to moisture, whereas sandstones and conglomerates are infrequent but offer good conditions for stability. Water bodies and outcrops of limestone are marginal and usually do not significantly affect most projects, although groundwater levels should be confirmed locally before foundation works.

Seismicity in La Alberca is very low, with few events and a maximum magnitude below 4, so it does not represent a relevant constraint in geotechnical design. The non-clayey substrate rules out the risk of expansiveness, providing a stable and predictable foundation environment. Thus, the main consideration for geotechnical studies in this municipality will be checking the homogeneity of the subsoil and controlling any possible localised zones of loose materials or high moisture content.