| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a manhole skeleton body from floating up and to protect piping around the skeleton body. <P>SOLUTION: A built-up manhole 1 comprises a manhole skeleton body 2 and a manhole bottom slab 3 in which a skeleton body 2 is installed. The manhole bottom slab 3 includes a bottom slab body 31 in which the manhole skeleton body 2 is installed, and auxiliary bottom slabs 32a, 32b formed on a side surface of the bottom slab body 31 to be disposed, respectively, right below inflow piping 4 and outflow piping 5 connected to a side surface of the manhole skeleton body 2. The inflow piping 4 and outflow piping 5 is composed of deformable piping including ribs. The manhole skeleton body 2, the manhole bottom slab 3, the inflow piping 4 and the outflow piping 5 on the bottom slab 3 are buried by crushed stones 8. <P>COPYRIGHT: (C)2013,JPO&INPIT |
