| 摘要 |
PROBLEM TO BE SOLVED: To provide a corner drain furnished with an overflow function, easy to construct and to prevent roof leakage. SOLUTION: The corner drain 1 is furnished with a bottom plate part 2 arranged on a floor surface 10 of a veranda, etc., a back plate part 3 erected from a rear edge of the bottom plate part 2, a lateral drainage 6 provided open on the back plate part 3 and an overflow channel 7 provided open at a position higher than an opening 6a of the lateral drainage 6 and constituted by providing the lateral drainage 6 and the overflow channel 7 by dividing them by a partition member 5 in an integral pipe 4.
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