| 摘要 |
The manhole has a manhole cover (1.4), balance rings (1.3) and a shaft cone (1.2) that stands in connection with the concrete structure. A waterproof connection element (1.5) is arranged between the balance rings and the shaft cone. The connection element has locking bars that are engaged in a recess (1.6) in its sealing position. The connection element has a sealing. |
