| 摘要 |
The arrangement (10) has a bifunctional screw (12) screwed directly into a bore (14), which is introduced into a solid anchoring base (16). The screw includes a screw head (18) provided with a cylindrical shaft (20) i.e. tip (22), which is tapered in a truncated cone-like or pyramid-like manner. Thread pitches (24, 26, 28) i.e. screw threads, are formed parallel to one another and partially extend in a helical manner along shaft length. Diameter of the bore without a curable compound is smaller than that of the bore with the curable compound such that the thread pitches cut into the base. The anchoring base is made of concrete, brickwork, concrete, stone and wood. |
