| 摘要 |
PROBLEM TO BE SOLVED: To fix pool floors in place. SOLUTION: The pool floors 11, 12 and 13 are arranged in adjacent relationship. Fixtures 5 are inserted into a hole 4 in the pool floor 11 and a hole 4 in the pool floor 12 at three portions of a floor part 2 where the pool floors 11 and 12 adjoin to each other. Similarly, fixtures 5 are inserted into another hole 4 in the pool floor 11 and another hole 4 in the pool floor 13 at two portions of a floor part 2 where the pool floors 11 and 13 adjoin to each other. The pool floors 11, 12 and 13 are thus connected and fixed to one another by the fixtures 5.
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