| 摘要 |
The present invention relates to an industrial manhole using a wedge, wherein a height control ring is additionally mounted to the iron lid of the manhole and fixed thereto using a wedge, so as to control the height of the manhole. According to the industrial manhole using a wedge according to the present invention as structured above, construction is convenient since the height control ring is secured at the upper end of the iron lid and then fixed by the wedge so as to be completely mounted regardless of operation skill. In addition, it is possible to carry out other processes such as asphalt concrete overlay or the like in a short time. |
