| 摘要 |
PROBLEM TO BE SOLVED: To provide an integrally molded waterproofed slab for a bathroom unit, excellent in workability even in such a condition as to be surrounded by built walls on three sides and capable of being manufactured at a lower cost. SOLUTION: The waterproofed slab is integrally formed with a washing place part whose inner bottom surface 1f has a drain inlet and a bathtub receiving part 1c formed so as to be adjacent to the washing place part through a partition wall 1g, whose inner bottom surface has a drain inlet. The waterproofed slab is characterized as follows: an opening part 1a is formed in the section located in the central part of the bottom surface of the receiving part 1c; the opening part 1a is located to the central-part side of the receiving part 1c with reference to a bathtub leg; and the opening part 1a is covered with a cover. Consequently, operations can be easily and rapidly conducted because an operator can enter the opening part 1a of the receiving part 1c so as to dodge the built walls when the waterproofed slab is installed in a bathroom even in an execution job site, wherein the bathroom is surrounded by the surfaces of the built walls on its three sides.
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