| 摘要 |
An upper plate of a support is provided to support the load of a top plate evenly and to keep top plates at regular intervals on a double floor system. An upper plate of a support comprises a horizontal plate(10) provided with a screw hole(11) to house a height adjustment bolt, and four spacers(20) extended vertically from the horizontal plate, formed in a cross-shaped structure and provided with inclines(21) toward the screw hole to perform height adjustment work conveniently. |
