Hypoplasticity and viscohypoplasticity belong to more powerful constitutive equations for geotechnic. In order to verify the prediction capabilities of the constitutive model one case history of a piled raft foundation-Messeturm tower in Frankfurt, Germany-has been studied using a viscohypoplastic constitutive law in a three dimensional finite element analysis with the program ABAQUS and the user subroutine UMAT developed by A. Niemunis and the geotechnical group of the Karlsruhe University in Germany. In the finite element analysis the