Estudio geotécnico in Dalías

In Dalías, the geological substrate is dominated by limestones, dolomites and marbles, which provides firm ground and good bearing capacity for shallow or deep foundations, depending on the lithological profile. Occasionally, fine sands and silts may appear; these are less stable materials, as well as gypsum, anhydrite and salts, the risk of localised dissolution of which must be assessed. The presence of generally impermeable formations limits the vertical transmission of water, although it may lead to shallow aquifers in certain areas. The choice of foundation type must consider the presence of highly competent materials such as carbonates, and should avoid founding in areas with gypsum, salts or loose silts.

Seismicity in this municipality is moderate, with 27 events over the last 30 years and a maximum magnitude of 3.6, so seismic risk is not high but it is still advisable to evaluate it for distinctive or sensitive structures. Given that extensive carbonate outcrops are identified, it is essential to check the existence and possible activity of karstic phenomena before building, as they can create voids that are not visible at ground surface and that compromise stability. As the substrate is non-clayey, the risk due to expansivity is ruled out as a conditioning factor. The main geotechnical consideration for Dalías will be verifying stability against karstic phenomena and precisely identifying soluble materials and areas with potential loss of bearing capacity.