Estudio geotécnico in Llucmajor

In Llucmajor, soils of fine sands and silts predominate, together with significant outcrops of limestones, dolomites and marbles, followed by frequent occurrences of white or soft expansive clays. The characteristics of these strata vary notably: whereas sands and silts provide a medium bearing capacity and require careful analysis to define solutions for shallow or semi-deep foundations, the carbonate formations can achieve good bearing capacities, although they may host cavities or fracturing associated with karst development. Expansive clays, although present, do not dominate the subsoil, which reduces the risk of movements resulting from changes in moisture, particularly in areas where they rest on non-clayey materials.

The seismicity in Llucmajor is moderate, with a record of 24 events over 30 years and a maximum magnitude of 3.2; values which, although not critical, must be taken into account for sensitive buildings. The development of karst in limestone formations necessarily requires verification on site before designing any type of foundation, given the risk of localised collapses or sinkholes. The non-clayey subsoil rules out expansivity as the main conditioning factor, so the main geotechnical aspect to consider will be the presence or absence of karst cavities beneath the area of works.