In view of quality warrantee during piling activities or, when in doubt, regarding the quality of pile foundations, the piles can be checked acoustically.
With the old-fashioned method of "hammer tapping" it is possible to check both prefab as well as poured concrete piles for any defects such as cracking,
constrictions or bulging. With the aid of manageable measuring equipment, which can be operated by one person, indications can even be given on the site,
regarding the quality of the foundation piles.