| 摘要 |
<p>The box (1) has a clamping bar (4) to tightly hold holding parts e.g. steel reinforcements such as steel mat, of concrete parts between the clamping bar and fastening bars (3). The box is embedded in pre-fabricated concrete parts and fastened to the holding parts. The fastening bars are arranged at a distance from each other, and an additional clamping bar is provided between the fastening bars. The clamping bar runs parallel to the fastening bars, where an end of the clamping bar is fastened to the box.</p> |
