STRUCTURE OF ISOLATING A CRASHING SOUND OF FLOOR OF A BUILDING

摘要

A structure for blocking impact sound of floors in a building is provided to prevent the load impact sound and the noise of the upper floor from being transmitted to the lower floor through a floor slab by using upper and lower floor vibration proof materials. A structure for blocking impact sound of floors in a building includes plural lower floor vibration proof materials(400) installed at the upper surface of a floor slab(100) at predetermined intervals; a vacuum resonance room(700) formed at both left and right sides on the lower floor vibration proof materials; a plywood(600) whose connection part is laid to connect one and the other ends; an auxiliary resonance room(520) formed at the upper surface of the plywood; upper floor vibration proof materials(500) installed to have the self-elastic force like a rubber material; and a finishing mortar(200) where a finishing material(300) is laid on the upper surface. The lower floor vibration proof materials are formed with an upper recessed groove(410) and a lower recessed groove(420).