flexible pipe joints.
flexible pipe joints.
(OP)
Hi guys,
I have another problem. We have to construct a flexible pipe joint in a pipe between a building and a manhole. The spec calls for a joint which allows a relative settlement of 200mm!!!!!!!!!!!!
Unfortunately the joints which are to be used require approx 2m of lenght to develop the movement. In some cases I only have 0.5m.
I am looking for a quality pipe joint which can take the settlement and still fit within the constraints.
Any ideas. I've already tried to move the constraints but some ae fixed.
Newbuilder
I have another problem. We have to construct a flexible pipe joint in a pipe between a building and a manhole. The spec calls for a joint which allows a relative settlement of 200mm!!!!!!!!!!!!
Unfortunately the joints which are to be used require approx 2m of lenght to develop the movement. In some cases I only have 0.5m.
I am looking for a quality pipe joint which can take the settlement and still fit within the constraints.
Any ideas. I've already tried to move the constraints but some ae fixed.
Newbuilder





RE: flexible pipe joints.
Could you anyway better specify your problem? I suppose the pipe is substantially horizontal and the differential settlement is vertical. Is the pipe under pressure from inside or from outside? Does it contain a fluid (moving or at rest)? Which is the diameter, thickness and material? Would it be acceptable that the pipe area is reduced as a consequence of the settlement? (thinking to some kind of sliding joint, but will hardly be acceptable).
prex
motori@xcalcs.com
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RE: flexible pipe joints.
RE: flexible pipe joints.
The pipe is to carry foul water under gravity only, it's 150mm dia.
Many options have been looked at, I let you know how we resolved it later - when I figure a way out.
nb
RE: flexible pipe joints.
RE: flexible pipe joints.
I'm sorry I don't have a list handy...
RE: flexible pipe joints.
I think I have a solution for you.
First the pipe is gravity only
second the pipe will carry drainage only
third the pipe needs allow 8" of verticle movement over time
forth the pipe outlets into a manhole
solution:
breake opening in manhole at settled elevation minus slope invert.
place flexible poly pipe between building and manhole.
This pipe moves with no problem
One consequence is to place pipe in a chamber and not against ground since no pipe is going to push the earth between the building and the manhole down 8" to compensate for the grade change. In other words the pipe will have an upwards humb basically 1/2 way tthrough if it can not push the soil down accordingly.
The chamber can be concrete covered trench, just wide enough for the pipe with a supporting structure half way through that allows a short seqment of the flexible pipe to move vertically down.
Hope this helps you.
The pipe is readily availble flexible drain pipe in the States.
Choose a sturdy type and make sure the walls of the trench are smooth to prevent nicks.
RE: flexible pipe joints.
RE: flexible pipe joints.
RE: flexible pipe joints.
Great idea, thanks. Is the poly pipe ribbed (like a subsoil drain)?
Unfortunately we decided to bite the bullet and make room for the
chambers. It caused a good deal of inconvenience but perhaps is the better solution.
Thanx for all the tips.
nb