| 摘要 |
The method involves digging a trench (2) in substrate (1), and filling the trench with a support liquid such as bentonite. A reinforcement (3) and spacer (6) are introduced in the trench such that the spacer is located between reinforcement and trench wall (5). The concrete mix is poured into the trench, and the spacer is removed from the trench before the setting of the concrete mix. Independent claims are included for the following: (1) spacer; (2) spacer unit; and (3) frame. |
