| 摘要 |
PURPOSE:To decrease impact sound to a floor by forming an external frame of a plurality of floor girders, by installing ceiling hangers to floor beams arranged between the girders and by providing weights to the sides of the ceiling hangers. CONSTITUTION:An external frame 1 is formed of four wooden floor girders 1a and 1b, and four floor beams 2 are installed at equal intervals between the girders 1b on the opposite gable ends. Then floor boards 3 are fixed to the upper face of the external frame 1 and to the upper faces of the floor beams 2. Vertical connecting boards 4 and connecting hardwares 9 are installed in the direction intersecting the floor beams 2 at a right angle and are also fixed to the sides of the ridge-side floor girders and the floor beams 2. Then ceiling hangers 5 are installed between the vertical connecting boards 4 and the gable-side floor girders 1b, and weights, approximately weighing 2kg each, are installed to the sides of the ceiling hangers 5. Thereby impact sound reverberating to downstair rooms can be decreased. |
