FLOOR STRUCTURE

PURPOSE:To improve the extent of floor impact noise interrupting performance by forming an outer frame with plural floor large beams, anchoring plural floor small beams, parallel set up with each other, to these floor large beams, and locking a floor plate to the top of each floor small beam. CONSTITUTION:An outer frame is formed with four floor large beams, and plural floor small beams 24 parallel set up with each other are anchored to the floor large beams, forming a floor structure 21. Then, a connecting member 31 connecting these floor small beams 24 is attached to the longitudinal side of the floor small beams 24 where this floor structure 21 adjoins, while two ceiling hangers 32, 33 are parallel set up between the floor small beams 24. In succession, the ceiling hanger 32 on one side is locked one side of the opposite floor large beam and the connecting member 31, and the ceiling hanger 33 on the other is locked to the other side of the floor large beam and the connecting member 31. With this constitution, a damping effect is thus securable.