Estudio geotécnico in Mirandilla

In Mirandilla, outcrops of granite, gneiss and other igneous rocks predominate, forming the most habitual geological base for foundations. These materials exhibit very good bearing capacity and, in general, provide a stable and robust base for any type of shallow or deep foundation. The occasional presence of fine sands, silts and sandstones may require detailed characterisation in those areas to ensure the proper behaviour under structural loads; however, the overall incidence of soils with low bearing capacity is low. The generally low permeability of the formations usually does not represent a drawback, except for the possible accumulation of surface water in low-lying points.

Local seismicity is notable, with 52 recorded events over the last 30 years, although the maximum magnitude reached (Mmax 4.4) does not require special considerations in structural design according to conventional standards. The substratum is not clayey, eliminating the risk of expansivity, so no problems are expected due to ground heave or shrinkage. There is no evidence of karstic phenomena in the area, so foundation stability depends mainly on the local characterisation of the infrequent layers of sands or silts interbedded between the dominant granitic masses.