Estudio geotécnico in Carnota

In Carnota, formations of sandstone, conglomerates and flysch predominate, with a smaller presence of slate, schist and residual quantities of fine sands and silts. These materials, generally of high mechanical competence, provide adequate bearing capacity for shallow foundations, unless there are altered or weathered levels at the surface. Given their impermeable nature or low permeability, the accumulation of groundwater tends to be limited to poorly developed superficial aquifers, which implies a low risk of liquefaction or collapse associated with the groundwater table.

The documented seismicity in Carnota is considered moderate, with a maximum of 10 events in 30 years and a low maximum magnitude (2.7), so seismic risk does not represent a restrictive factor in conventional structural design. The dominant substrate is not clayey, eliminating the possibility of problems associated with volumetric expansion and contraction of soils. Overall, the main constraint for the geotechnical study will be to verify the competence and degree of weathering of the outcropping levels for a safe and economical foundation.