Re-Use of Old Pile Foundations in Amsterdam

Evaluating existing foundations is a common and necessary practice, not only for buildings, but also for structures like bridges that bear increasing traffic of cars and trucks, resulting in a tremendous increase in the foundation loads. Inspections to assess the adequacy of existing foundations are taken to meet the current functional requirements.
Marcel Bielefeld, Allnamics Geotechnical & Pile Testing Experts, The Netherlands

The question of the continued suitability of existing foundations arises when the function of the superstructure changes. This can occur when the superstructure is replaced or when the existing structure is expanded, leading to higher loads on the existing foundation. Obviously, the re-use of existing foundations can contribute to a more sustainable society. But this may not be the only reason why an existing foundation is to be re-used: new foundation works could cause nuisance for neighbors or even damage to the adjacent buildings, the construction lots could be too small for modern foundation equipment, or the mobilization of piles or concrete mix could be challenging.