France – Technical testing, analysis and consultancy services – RN4 mise a 2x2 voies de la déviation de Saint Dizier : Contrôle Extérieur "Auscultation sonique"

The services mainly consist of carrying out compliance checks on the implementation of pile concrete according to the frequency and control plan defined by the contracting authority: On site: o Visual inspection of the inspection tubes; o Sonic inspection test on the piles defined jointly with the contracting authority; o Production of an on-site intervention report; o Production of an analysis report of the results with tracking of non-conformities if necessary