Estudio geotécnico in Calders

In Calders, the dominant subsoil consists of sandstones, conglomerates and flysch, lithological materials that usually provide adequate bearing capacity for buildings, although they may show variability depending on local compaction. Also present, in a smaller proportion, are calcareous and dolomitic formations, as well as occasional layers of white expansive clays or compact gravels and sands. The low permeability of these strata promotes overall stability; however, localised areas with soft clays must be carefully identified and not used as a direct founding stratum for foundations.

Seismicity in Calders is very low, with only 1 recorded event every 30 years and a maximum magnitude of 1.8, conditions that do not imply any special requirement for the seismic design of structures. There are no significant karst processes and no risk of expansiveness is detected, as the predominant subsoil is not clayey. Therefore, the main constraint in the geotechnical studies for this municipality lies in identifying the local heterogeneity of the flysch and avoiding foundations bearing on possible zones of soft clay.