| 摘要 |
PURPOSE:To mount a sound board so that it is capable of controlling vertical positions and to improve soundproofing efficiency of an upper floor by screwing a joist hanger on a screw shaft located on up and down of a side hole formed on a joist material. CONSTITUTION:Joist materials 4 are installed in the inside of a frame 2 which form materials are joined in the shape of a rectangle. A joist hanger 3 is screwed on a screw shaft 15 supported at up and down of a side hole 14 of the joist material 4, and the height of a receiving piece 13 is so controlled that its surface is placed on a position lower a portion of a thickness of a sound board 10 than the surface of the frame 2, and is fixed. Side edges of the sound board 10 are supported respectively by the receiving piece 13 of the opposite joist material 4, the joist material 4 and the receiving piece of a lateral form material 30 to install, and it is leveled with the surface of the frame 2. When a floor panel 1 is used for a Japanese room, lowering the joist hanger, releasing the supports of the sound board 10, and it is attached to the bottom of the frame 2 to use is as a mounting foundation for a ceiling board 7. |
