| 摘要 |
A device for providing a recess in a cast concrete structure and protection for reinforcing bars intended to connect this structure with at least one further concrete structure, said device including a section which may be cast into the first-mentioned concrete structure, this section together with a covering strip forming a space for reinforcing bars taken through the wall of the section. At least the section (2, 3a, 3b) consists of plastics material provided with portions (5 - 7) for enabling perforation of the plastics material by the reinforcing bars (12, 13, 23, 24). The section and strip (4) are made in one piece to form a section preferably made from plastics. |
