| 摘要 |
PURPOSE:To improve building efficiency and safety, by a method wherein water permeable concrete is cast in place directly on the concrete bottom of a dock, and a sheathing board is placed for concreting to build an off-shore structure. CONSTITUTION:Water permeable concrete 2 is cast in place directly on a concrete bottom 1 of a dock, and a sheathing board 4 of forms for a concrete box body 3 is placed thereon. Thereafter, concrete 5 is placed to build the concrete box body 3 which forms the lower part of an off-shore structure. When water is poured in the dock, the water is leached all the way through to the surface of the concrete 2 and is spread throughout the whole under surface of the sheathing board 4. The sheathing board is caused to float in an extremely stable state depending upon the depth of the poured water. This, since neither board wood nor a temporary material are used, enables provision of a stable working bed, and permits building of a dock which is excellent in building efficiency and safety. |
