| 摘要 |
PROBLEM TO BE SOLVED: To provide a slab buried part structure of a pipe body which can be easily drawn out even if it is disposed astride a slab penetration part in a state that it is buried by a backfill material.SOLUTION: In a slab buried part structure, a pipe body 10 for drainage penetrates a penetration part 2 of the slab 1 in a state the pipe body 10 is buried by a backfill material 3. The pipe body 10 comprises a pipe main body 11 and a smooth pipe 29 assembled to the pipe main body 11. The pipe main body 11 includes: an upper step difference part 17 and a lower step difference part 25 arranged near an upper part 2a and near a lower part 2b of the penetration part 2, respectively, and protruding outward; and a connection pipe part 19 arranged in an arrangement position of the backfill material 3 between the upper step difference part and the lower step difference part, and having a diameter smaller than the outer diameter of the upper step difference part and the lower step difference part. The smooth pipe 29 is assembled to an outer peripheral surface side of the pipe main body 11 such that it can be drawn out to the upper part of the penetration part 2 in the pipe body 10 and the outer diameter dimension of an outer peripheral surface side from the upper step difference part 17 and the lower step difference part 25 is equalized. |
