Three large scale field tests on dikes have been carried out at the IJkdijk test site in the Netherlands. Two tests involved piping, micro-instability of the sand core and erosion from overtopping. Both dikes failed on micro-instability. The third test involved slope stability with a deep sliding plane. All tests were done to validate monitoring systems and dike safety information systems. Seve...

Abstract The Blue Wave is a locking structure that allows simultaneous navigation in both directions of navigation, without stopping most cases, and at speed depending on the local topography. Its principle has been described an issue PIANC Bulletin, N°108, september 2001. It could be used, lieu set locks, Canal which presently being improved to CEMT Class Va, far upstream from Paris, Villiers ...