| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a manhole joint capable of making no variation in an angle of a joint section and making no puddle in the joint section even if rolling pressure or earth pressure acts on the joint section between a manhole and the manhole joint. SOLUTION: The manhole joint F is so constituted that an inside cylinder section 21 of a double cylindrical rubber made-sealing compound 2 consisting of the inside cylinder section 21 and an outside cylinder section 23 and formed by connecting one end of both cylinder sections 21 and 23 with a connecting section 22 to close is fixed on the circumference of a joint 12 of a short cylindrical joint body having a socket 11 on one end and the joint 12 on the other end with a fastening band 4, the outside cylinder section 23 has the approximately same length as the thickness of a side wall 51 of a concrete made-manhole 5 and that a fixed ring 3 is placed between the inside cylinder section 21 and the outside cylinder section 23 in a state to enable an diameter to expand.</p> |
