| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pipe bolster and its using method capable of efficiently arranging plural pipes in which cables are inserted in an excavated groove or the like not only in the longitudinal and lateral directions but also in the oblique direction to reduce an excavating width. SOLUTION: An octagonal cylinder having a specific length is horizontally cut correctly in half, the halves are mounted as main bodies 2, male-type locking parts 3 are respectively formed on each side of one of outer sides with respect to a vertical plane obtained by bringing down the main bodies 2 from a central shaft of the octagonal cylinder, female-type locking parts 4 respectively engaged with the male-type locking parts 3 are formed on each side of the other outer side, a locking projection is formed on one side of a cut face of each main body 2, an engagement hole is formed on the other side, the shape of the main bodies 2 is point symmetric with respect to a central point of the octagon when the both cut faces of two main bodies 2 are butted, and the octagonal shape is formed by locking the locking projection of each cut face to the locking hole of the opposite cut face.</p> |
