| 摘要 |
<p>PROBLEM TO BE SOLVED: To firmly support a handrail even to a wall face with a hollow face by threading three-way load bearing bolts in a washer body of a handrail bracket and threadly entering into the concrete face. SOLUTION: A pin anchor 15 is set in a handrail bracket attachment part of a gypsum board 1 attached to a concrete face 3 via a hollow face 2 using a drill, etc. The pin anchor 15 is made to threadly enter into the washer body 20 having an anchor bolt threading hole in its central portion so as to fasten to the gypsum board face 1. Then, the pin anchor 15 is made to threadly enter into the handrail bracket body 12 and fixedly locked by a thick nut 22 and a thin nut 23. After the positioning, load bearing bolts 25a, 25b are threadly entered into the concrete face 3 so as to be fixed. This constitution can transmit the load applied to the handrail top part to the concrete face 3 so as to prevent the gypsum board 1 from being broken.</p> |
