Geotechnical study in Serranillos del Valle

In Serranillos del Valle, ground conditions are predominantly formed by sandstones, conglomerates and flysch, which provides a favourable geological basis for foundation works owing to the adequate strength of these materials. The occasional presence of limestones, dolomites and marbles is scarce, and surface water levels are also frequent, which may condition the choice of foundation type in projects close to these bodies of water. The typical bearing capacity in these lithologies is usually sufficient for residential and industrial buildings; however, detailed characterisation and determination of the water table level are essential in order to select the optimum foundation system and avoid potential differential settlements.

Seismic activity in the municipality is very low, with only 5 recorded events over 30 years and a maximum magnitude of 3, so seismic risk does not constitute a relevant constraint for structural design. On the other hand, although there is secondary presence of expansive clays, their location and influence are limited, especially in areas with a climate without anhidro deficit; it will be the specific geotechnical analysis that determines the need for preventive measures against expansivity. The main aspect to consider in geotechnical studies of the area is the presence of aquifers and the physical-mechanical characteristics of the alluvial and flysch deposits, which can vary significantly in terms of compactness and behaviour under loads.