| 摘要 |
PURPOSE:To improve precision on the execution of work by arranging a plurality of boring anchor inserting holes at required hole center intervals, on the lower surface of a floor board, in the manufacturing process of the formed floor board. CONSTITUTION:On the lower surface of a formed floor board 10, a plurality of floor-suspension bearing boring anchor inserting holes 1a are arranged in the state of the continuous pattern of a grid, a zigzag, or the like. Then, the holes 1a are fitted on boring anchors 2 to be inserted into, and anchor bolts 3 are fitted to be screwed into. Besides, after a bearing base frame 4 is fitted on, a suspension bolt 5 is fitted on the bearing base frame 4, and a suspension band 6 and a bearing piping body 7 are fitted on. |
