| 摘要 |
PURPOSE: A manhole and a manufacturing method thereof are provided to maintain watertight seal even in case of crack on concrete by connecting a body to the underside of a main body and integrally molding concrete over the outer side of the body and the upper side of the main body. CONSTITUTION: A manhole comprises a main body(11), a body which is formed with a main body connector(21) and pipe connectors(27,28) and connected to the underside of the main body, a cover which is formed with a lid hole(31) and installed on the top of the main body, a lower body(60) which is formed by placing concrete on the outer side of the body, and an upper body(70) which is formed by placing concrete on the outer side of the cover. |
