| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a joint connected to a concrete manhole flow-in pipe having a large gradient. SOLUTION: When a flow-in pipe 4 having a large gradient and a subpipe 7 fixed by a concrete manhole are connected to a joint 30 provided in the manhole so as to directly cross each other, the flow-in pipe 4 and the joint 30 are joined to each other by an adhesive and the subpipe 7 and the joint 30 are joined to each other by a free joint 32. Thus, even when the gradient of the flow-in pipe 4 is large, the subpipe 7 is placed along the wall of the manhole and the entire part of the flow-in pipe 4 is visible from the joint 30.</p> |
