GNGTS 2022 - Atti del 40° Convegno Nazionale

GNGTS 2022 Sessione 3.2 449 Fig. 3: Detailed geological maps of the area of San Pietro Valley (Asti city) (above); Geoelectrical tomography sections (below). located along the hilly ridge. Previous geotechnical investigations by penetration tests and pits carried out around the house, revealed the presence of water below the floor of the house. Electrical Resistivity Tomography (ERT) . In order to understand the provenience of the humidity of the house, two ERT were performed. The ERT 1 section was made using 48 electrodes with a 3 m center distance; the stringing with a total length of 141 meters made it possible to reach a depth of investigation equal to 24 meters (in central position). The ERT 2 section has been created using 48 electrodes with 2 m center distance for a string length