Every civil project requires a proper understanding of the soil characteristics of the whole construction area as well as the detailed knowledge of the underground conditions. TFN has been constantly involved in the soil investigation surveys of all the major projects executed in the country for more than 20 years with its fleet of 20 equipment and the knowledge of a vast experience in the field,also supported by a logistic net of offices and yards.

Onshore or offshore bore holes with sample recovery, standard penetration tests, electrical and mechanical static penetration tests, pressumeter tests and a wide range of in situ tests are performed by Trevi geotechnical department.

Moreover, a modern, fully computerised geotechnical laboratory equipped with the most advanced devices is able to assist, with its output, an already competent capacity in the field.