| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of a floor slab drain outlet suitable for the placement in a clean room carrying out floor drainage. SOLUTION: According to an embodiment of the present invention, the structure of the floor slab drain port X comprises a metallic frame 1 installed inside of a through-hole 5 of a floor slab S, connected to an end of a rising pipe P and opened in a floor face F for the purpose of constituting floor drainage through a pipe P by installing the rising pipe P connected to a drain pipe (not shown in Fig.) after boring the through-hole 5 in the floor slab S of a building such as a clean room or the like, a perforated plate 2 and a leg-attached lid body 3. The metallic frame 1 has a bearing section consisting of a step formed to the floor face F opening side by reducing the diameter in cross-section. The circumferential edge of the perforated plate 2 is fitted on the bearing section 11, the plate is placed inside the cross section, and the leg-attached lid body 3 is placed on the perforated plate 2. The lid is accommodated in the metallic frame 1 so that the lid surface is flush with the floor face F. COPYRIGHT: (C)2006,JPO&NCIPI
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