Estudio geotécnico in Íscar

In Íscar, the predominant ground consists of compacted gravels and sands, accounting for most of the local geology, accompanied in places by areas of surface water masses, as well as small proportions of gypsum, anhydrite and salts, carbonate-bearing materials and sandstones. These strata generally provide good bearing capacity for shallow foundations, particularly when they are founded on densified gravels and sands. However, the presence, albeit in the minority, of gypsum and salts implies the potential for dissolution processes that must be assessed in the project, as they may compromise the durability and stability of the support. Homogeneous formations with low permeability may allow aquifers at depth, which must also be taken into account to avoid flooding or differential settlement problems.

Seismic activity in Íscar is classified as high, with 200 recorded events in the last 30 years and a maximum magnitude of 4.7; therefore, seismic parameters must be incorporated into the structural calculation of buildings. The presence of carbonate-bearing materials and the occurrence of karstification require a rigorous check for the presence of voids or subsidence before proceeding with the foundation, as these represent a relevant geotechnical risk. The risk of expansivity associated with clays is considered low due to their subordinate presence and climatic conditions that are not favourable for these processes. In this context, the main constraint in geotechnical studies in Íscar will be the assessment of karst and the seismic response, together with a case-by-case analysis of possible dissolution sources in gypsum-bearing ground.