| 摘要 |
A fabricated manhole is provided to construct and combine the manhole easily by assembling spherical bodies with a recessed groove and a penetration hole, and to restrict leak of sewage by increasing sealing force of a joint with a rubber packing. A fabricated manhole includes a lower spherical body(100) opening up and having a sill(120) and a pipe hole(110) formed at a sidewall, a vertical spherical body(200) placed in the sill of the lower spherical body and provided with a sill(220), and an upper slab(300) placed in the sill of the vertical spherical body and provided with a manhole bore(330) and a sill(320) in which a manhole cover(400) is placed. Plural recessed grooves(230) are formed radially in an outer periphery of the vertical spherical body, and a penetration hole(232) is formed in the bottom of the recessed groove. Bolting holes(140,240) are formed in walls of the lower and vertical spherical bodies, and communicated with the penetration hole. The spherical bodies are connected by assembling a bolt(B) with the penetration hole and the bolt holes. Semicircular placing grooves(122,222,322) are recessed in the sills, and combined with a packing(500). Threads are formed at both ends of the bolt. |
