Geotechnical study in La Pedraja de Portillo

In La Pedraja de Portillo, soils of compacted gravels and sands predominate, which favours a high bearing capacity for shallow or semi-deep foundations. These formations have low-permeability characteristics, although relevant aquifers may be present at depth, which requires verification of the groundwater level before the execution of the work in order to avoid drainage problems or washout of fines.

From the seismic point of view, this municipality shows high seismicity, with 200 events over 30 years and an estimated maximum magnitude of 4.7. This makes it necessary to incorporate specific structural design criteria in accordance with the current regulations. The likelihood of finding expansive clays is low, as they occur only in a punctual manner or in non-problematic areas, so the main geotechnical constraint in the area is seismic action, to be taken into account in every building project.