Earthquake investigations at the HDR facility

Earthquake experiments with many different low and medium level mechanical exciations like shakers, buried explosives and snapback were performed in the last ten years at the HDR (Heissdampfreaktor) Test Facility in Karlstein/Main, FRG. The high level shaker tests reported about in this contribution were the culmination of this series bringing the reactor building to its ultimate loading capacity. (LBF)