SPT drilling is a process of soil exploration and recognition, widely used in civil engineering to obtain subsidies that will define the type and dimension of the foundations that will serve as the basis for a building. The acronym SPT originates in English (standard penetration test) and stands for standard penetration test.

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The main information obtained with this type of test is:

1. The identification of the different layers of soil that make up the subsoil;
2. The soil classification of each layer;
3. The level of the water table; and
4. The carrying capacity of the soil at various depths.