It is very important to reduce vibration caused by train running for the station building which included railway tracks. Floating slabs as isolated tracks were used to avoid the problem of structure-borne noise in new Hakata station building. In order to replace tracks of commercial line to floating slabs, for example the steel girder fastened rails directly were used and special travelling cranes were designed to remove the temporary steel girders. As results of vibration measurement, the floating slabs turned out to reduced the vibration level on the station building floor by 25dB.
