In these studies we propose a monoblock floor construction throughout the room with continuous high rigidity floor panels and an independent wall construction method, in which walls are made vibrationally separated from the main body, in order to improve the floor impact sound insulation of wooden buildings, thus examining its effectiveness. The summary of the results is; (1)The monoblock high rigidity floor panel made the transmission of shearing force of panel throughout the room possible at the time of floor impact; and great increase of impulsive impedance was realized by constructing floor panels and beams in monoblock. (2)With the independent wall construction method of the downstairs room, by separating walls from the main body of beams and pillars, the vibration transmission loss from the second floor to the walls of the downstairs room was obtained, whose improvement effectiveness was 10 dB or more throughout whole frequency band in comparison with the wall of high rigidity construction.
