Estudio geotécnico in El Espinar

In El Espinar, the substrates formed by limestones, dolomites and marbles predominate; these are very frequent materials, widely recognised for their high bearing capacity, which favours the execution of shallow and deep foundations. Arenites and conglomerates are also present, although in a smaller proportion, contributing to levels of resistance that are adequate. The low percentage of gypsum, anhydrite and salts introduces a localised risk factor of dissolution, which must be considered in specific areas. The existence of highly permeable aquifers further reinforces the importance of controlling seepage during the design and construction phases.

The municipality has high seismicity, exceeding 150 events over 30 years and reaching a maximum magnitude of 4.7, which requires incorporating specific requirements into structural design in accordance with current seismic standards. Given the non-clayey substratum, the risk of expansiveness is ruled out; however, the possible presence of karst associated with the carbonate formations makes a detailed ground investigation essential in order to avoid subsidence or unforeseen cavities. Thus, karst-related impacts and seismic characterisation constitute the main geotechnical constraints in El Espinar.