| 摘要 |
A form assembly (12) for casting a lining wall in an existing manhole (10) includes a cylindrical lower form assembly (28), a circular horizontal form assembly (32), and a cylindrical upper form assembly (30). All three assemblies (28, 32, 30) are formed of smaller segments (34, 62, 78) which are assembled together within the manhole (10) and which can be disassembled after the manhole (10) has been repaired. |
