Estudio geotécnico in Fog

In Niebla, formations of limestones, dolomites and marbles predominate, followed by slates and schists, whereas sandstones, conglomerates and flysch occur only occasionally. For the most part, these materials provide good bearing capacities for shallow, direct foundations. However, the frequent presence of slates and schists, low-permeability materials, may condition the discharge of groundwater and requires correct characterisation during the geotechnical study to prevent possible stability and differential settlement problems.

As for the seismic dynamics of the area, Niebla shows moderate activity with 23 events in the last 30 years and a maximum historical magnitude of 3.3, which does not require special seismic considerations in the structural design. The non-clayey bedrock eliminates concern regarding ground expansivity. Thus, the main geotechnical focus should be on the accurate identification of the type and thickness of the near-surface materials and on assessing permeability for an optimal foundation design.