| 摘要 |
PURPOSE: A concrete manhole molding frame is provided to obtain a separation-type manhole capable of adjusting a height in order to correspond to a construction environment. CONSTITUTION: A separation-type manhole capable of adjusting a height comprises a lower cylindrical body(2) and a top plate(4). The lower cylindrical body includes a raising sphere portion(6), thereby enabling to adjust the height. A concrete manhole molding frame is composed of a mold to form the inner and outer walls and an edge supporting frame. A top plate molding frame is composed of an outer wall forming mold and a bottom frame for forming the bottom surface. |
