| 摘要 |
The reinforcement (11) comprises at least one rod (12) which is bent in wave or zigzag fashion, alternately to the block (10) upper-side and underside (13,14) and/or to a block edge side close to it. Two or more of the reinforcement rods may be incorporated. The rods located one above the other are so arranged that they approach one another and are spaced from one another. In adjacent areas, the rods are reciprocally joined. The block has the form of a plate corresponding to the horizontal cross-section of a support column formed by it. Each wave or zigzag bent rod is bent to a circular form with the circle main plane parallel with the block upper and under sides. |
