| 摘要 |
PROBLEM TO BE SOLVED: To provide a pipe arrangement structure for a continuous footing opening in underfloor pipe arrangement, which allows the operator to arbitrarily move under a floor and to easily carry out underfloor inspection etc., even in the underfloor drain pipe arrangement structure in which drainage basins are collectively set under the floor of a building. SOLUTION: According to the drain pipe arrangement structure under the floor, a drain pipe 4 arranged across the location of the continuous footing opening Bh is formed so as to be removable, and the removable drain pipe 4 is detachably connected to a main drain pipe 3 via joint portions 5. COPYRIGHT: (C)2005,JPO&NCIPI
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