PROBLEM TO BE SOLVED: To improve drain capacity by forming a cylindrical drain pit swelling downward on the drain port arranged position of a wash place, and arranging a net-cage-like catching member covering the lower opening in the pit projectingly upward. ;SOLUTION: Drain water is let flow from the drain port 2a of a drain pit 21 into the interior, filtered by a net-cage-like catching member 10, and drained from a drain pipe through a drain trap 8 without being reserved. Hair and the like contained in drain water are hooked with the wire net body of the net cage 10. When drain water is passed in order, hair and the like hookedly caught with the net cage 10 are washed away by drain water partially flowing down on the outer surface of the net cage 10, hence clogging of the center part of the net cage is reduced and hair is apt to be collected on the peripheral part, and drain capacity is insured for a long time. When the net cage 10 is clogged after the long lapse of time, because hair and the like are stuck on the projecting side surface, they can simply removed. Hereby, clogging can be hardly generated.;COPYRIGHT: (C)1997,JPO
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