Estudio geotécnico in Santa María de Guía de Gran Canaria

In Santa María de Guía de Gran Canaria, the predominant substrate is made up of granite, gneiss and other igneous rocks, which account for approximately two thirds of the ground. These materials provide excellent bearing capacity, facilitating the safe and stable execution of shallow or deep direct foundations, even for buildings of a certain size. Occasionally, beds of sandstone, conglomerates and flysch may appear, as well as some contributions from urban anthropogenic fill, although their extent is limited. Hard clays and marls are only found very locally, so they do not significantly affect the general mechanical behaviour.

The seismic activity recorded in the municipality is very low, with only 2 events over 30 years and a maximum magnitude of 2.3, meaning that seismicity does not represent a relevant constraint for structural design in local projects. No karstic phenomena exist and no risks associated with clay expansiveness or problematic materials are identified in this regard. Therefore, the main technical aspect to be considered in the geotechnical study is the correct characterisation of the igneous rock masses and the localised control of the unconsolidated deposits, thereby ensuring a stable and suitable foundation for construction.