| 摘要 |
PURPOSE:To improve workability, reduce the number of members, and reduce the construction man-hours and production cost by driving a heavy sound insulating plate on the lower face of an underfloor bottom board from below, and folding the driving pieces on the upper face of the underfloor bottom board to firmly fix it. CONSTITUTION:A vertical frame material and a horizontal frame material 12 are deposited and fixed to provide a peripheral frame 2, and a wooden partition material 21 is inserted and fixed to a flange below the frame material so that the lower face of the partition material 21 is aligned with the lower face of the peripheral frame 2. A support frame material 25 is continuously mounted on the flange below the vertical frame material at a gap from an upper flange, and end sections of floor joists 3 and cradlings 26 are connected and suspended. A sound insulating plate 6 overlapped with boards 6A, 6B made of a metal plate is arranged in the peripheral frame 2. Fixing metals 7 with driving pieces 10 are driven from below the sound insulating plate 6 with a pressing tool and the like until base pieces 9 are brought into contact with the upper face of the sound insulating plate 6. The driving pieces 10 are folded, and the sound insulating plate 6 and an underfloor bottom board 5 are firmly fixed. The floor section of the upper floor and the ceiling section of the lower floor are formed when they are suspended in parallel. |
