| 摘要 |
<p>PROBLEM TO BE SOLVED: To fix a wall back reinforcing material and a wall front reinforcing material sufficiently on the wall material side. SOLUTION: The fore end part of a fixing screw 13 holding a wall front reinforcing material 12 on the head part 13a side is screwed in a screw hole 10c of a wall back reinforcing material 10 to be disposed on the most distant side from a wall material W, so that a plurality of wall back reinforcing materials 10 and 11 be held on the fixing screw 13 side, and then the wall back reinforcing materials 10 and 11 are transferred to the back W1 side of the wall material W through a wall hole H. By rotating the wall back reinforcing material 11, subsequently, the wall back reinforcing materials 10 and 11 are made to open in a shape of crossing each other so that the opposite end parts of the wall back reinforcing materials 10 and 11 can engage with the periphery of the wall hole H. Then, the fixing screw 13 is screwed further in the screw hole 10c of the wall back reinforcing material 10, the periphery of the wall hole H of the wall material W is pressed by the outside end part of the wall front reinforcing material 12 and the opposite end parts of the wall back reinforcing materials 10 and 11 and thus the wall back reinforcing materials 10 and 11 and others are fixed with pressure on the wall material W side.</p> |
