Estudio geotécnico in Santa Bárbara de Casa

In Santa Bárbara de Casa, quarry slates and schists clearly predominate, representing more than 80% of the subsurface materials. These lithologies, composed of fine-grained metamorphic rocks, confer a high and stable bearing capacity, suitable for shallow foundations provided that competent levels are reached. The minor presence of granite and igneous materials also provides equally good bearing conditions, whilst areas of water masses are scarce and must be identified to avoid surprises during the excavation phase. The low permeability of these formations supports control of surface runoff and minimises seepage problems in foundations.

Seismic activity in this municipality is very low, with only 2 events over 30 years and a maximum magnitude of 2.5, which implies seismic risks that are practically negligible in structural design. There are no karst formations or risks associated with dissolution, and the expansivity analysis confirms the absence of expansive clays, thanks to the non-clayey rock substrate. The main factor to take into account will be to locate suitable support areas in the predominant metamorphic rock, ruling out significant risks from both expansivity phenomena and seismicity in the planning and design of foundations.