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Bending the wavin

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  • 17-07-2019 8:19pm
    #1
    magnethead
    Registered Users Posts: 429 ✭✭


    I hope this is not a big concern, I'm not a builder/plumber, so not used to dealing with Wavin pipes,
    I have mis-aligned the top pop out from my first floor toilets with the Pipe running to the AJ at the bottom, It's a 3M drop, The Pipes are out of alignment by about 40mm.
    Will it bend over that distance of 3M, and still seal properly at the ground?

    Thanks for your advise
    IMAG2577.jpg?raw=1


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    #2
    antoinolachtnai
    Registered Users Posts: 9,773 ✭✭✭antoinolachtnai


    It might, but it will look terrible. Why not buy a couple of bends, and put them at the bottom to get it to match up?


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    #3
    magnethead
    Registered Users Posts: 429 ✭✭magnethead


    Thanks man, I'm not too concerned how it looks...I'm slabbing that wall with another 100mm insulation sheets, so it'll all be hidden.


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    #4
    antoinolachtnai
    Registered Users Posts: 9,773 ✭✭✭antoinolachtnai


    Will you not make the work of fitting the insulation sheets a lot harder if the pipe isn't vertical?


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    #5
    Outkast_IRE
    Registered Users Posts: 7,515 ✭✭✭Outkast_IRE


    As suggested above get a bends and straighten it properly it's real amateur stuff doing anything else


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    #6
    magnethead
    Registered Users Posts: 429 ✭✭magnethead


    I don't think it will affect the insulation cover, the sheets only need 5 fixings per slab, and they are pretty big.

    So you can use a few bends to sort out a 40mm difference between centres? That's a tiny difference, All I can imagine is you are talking about two 90 degree elbows, but that would drop the downward pipe, a good distance to the side of the top pipe, Oh I should mention, this will be the soil stack too, I'm hoping to pop it out of the render under the roof.


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    #7
    gctest50
    Registered Users Posts: 9,605 ✭✭✭gctest50


    Dig out and move the AJ


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    #8
    antoinolachtnai
    Registered Users Posts: 9,773 ✭✭✭antoinolachtnai


    It will make more work surely, because the insulation will require cuts at an angle?

    Your labour and your trades will laugh at you behind your back if you don't have the pipe straight.

    Use a few smaller bends would be my suggestion. Get a couple of bends and a spare bit of pipe and experiment. You will see how it can be done. You are operating in three dimensions rather than two, so two bends gives you a lot of flexibility.


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    #9
    magnethead
    Registered Users Posts: 429 ✭✭magnethead


    AH yeah, GCTest50, I'm loving your common sense, didn't even think of that...
    THe AJ, is only barely covered, it has a sink and toilet to the right of this shot connected...no bother to dig it up, I'll do all the work :)

    Edit, would I get away with a little push to the side on the arm that goes to the wall, I guess these pipes are meant to feed directly in, and side pressure could cause them to fail.

    AJ.jpg?raw=1


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    #10
    magnethead
    Registered Users Posts: 429 ✭✭magnethead


    Please ignore the fairy liquid bottle in the above shot, that's before I realized it was a no-no for wavin pipe. Salts in it wreck the seals(harder them) apparently. He used water based lubricant for the rest of the piping


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    #11
    Still waters
    Registered Users Posts: 1,166 ✭✭✭Still waters


    magnethead wrote: »
    Thanks man, I'm not too concerned how it looks...I'm slabbing that wall with another 100mm insulation sheets, so it'll all be hidden.

    How will you hide the pipe in 100mm if you've to put a bend on the pipe


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    #12
    antoinolachtnai
    Registered Users Posts: 9,773 ✭✭✭antoinolachtnai


    Just looking at this now. You have to chase the wall? I would definitely try to straighten this out. A small bend below ground level where the pipe goes into the AJ would be best, to avoid bends in the wall. But it should be fine.

    Maybe this is the answer to your actual question, but you could use a coupler or two if you just need a very very small bend.


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    #13
    monseiur
    Registered Users Posts: 1,209 ✭✭✭monseiur


    magnethead wrote: »
    I hope this is not a big concern, I'm not a builder/plumber, so not used to dealing with Wavin pipes,
    I have mis-aligned the top pop out from my first floor toilets with the Pipe running to the AJ at the bottom, It's a 3M drop, The Pipes are out of alignment by about 40mm.
    Will it bend over that distance of 3M, and still seal properly at the ground?

    Thanks for your advise
    IMAG2577.jpg?raw=1

    Why not relocate the pop out pipe by chipping away 50mm to left with cold chisel and lump hammer and refilling around pipe with mortar or remove the pop out pipe fill the hole with suitable concrete/mortar and when settled re drill....and this time do it right:D Also don't forget to fit a T on this pop out pipe to vent the stack


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    #14
    jmBuildExt
    Registered Users Posts: 692 ✭✭✭jmBuildExt


    Whats the plan for the vertical pipe? come down the red line and 90 degree bend back into the recess at the bottom, then 90 degrees down in to the pipe (with the bag over it?)?

    40mm over 3 metres is a bend of .75 degrees - less than 1 degree - that's nothing. The pipe (with the bag over it) coming out of the AJ might have just enough play to turn that .75degrees on its last joint to accept the pipe (without having to worry aboud slight bends over the vertical pipe length)....

    Thats if it was going straight into the pipe (with the bag on it).... but it looks like you will need a 90 degree bend to go back into the recess anyway (from your red line). That's better again because you have an extra turn to lose your less than 1 degree.

    Stick it all together and you will be wondering what the worry was!


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    #15
    magnethead
    Registered Users Posts: 429 ✭✭magnethead


    Thanks Jmbuildext,
    This is two stacked bathrooms, the top pipe is taking the toilet,sink and bath connections(internally out through that pipe)
    That pipe with the bag stuck in it, is only a 90 elbow as you can see from the picture above. This Pipe also has to be my Soil stack going to the roof, so the connection at the 3M point will have to accept the lower connection and go on up to about 6.5M for the soil stack to vent. It will need some sort of Tee piece

    I am probably overly worried about these things, because I've ZERO experience and the finger only gets pointed at me if things go wrong. The Plumber should be on board next week, to start the first underfloor heating loops in the first floor (poured slab).
    I'll ask his advise but it's great to get yours so I can offer opinions too :)

    Thanks again


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    #16
    magnethead
    Registered Users Posts: 429 ✭✭magnethead


    Sorry, just a quick question, if someone is watching this, what is the Wavin T piece, I need to connect at the 3M mark there where the pipe comes out horizontally, I need to continue up to form a soil stack on this


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    #17
    magnethead
    Registered Users Posts: 429 ✭✭magnethead


    Dug out the AJ a bit, looks like I won't be moving it right as there is a diagonal coming out the back and it has a solid connector on it were it straightens into the wall, that won't fit if I move it 50mm to the right :(

    As a matter of interest, is it normal practice to stick a screw through the next collar, you put on an AJ?

    AJ1.jpg?raw=1


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    #18
    Still waters
    Registered Users Posts: 1,166 ✭✭✭Still waters


    magnethead wrote: »

    As a matter of interest, is it normal practice to stick a screw through the next collar, you put on an AJ?

    AJ1.jpg?raw=1

    Thats not an issue, it'll do no harm


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    #19
    magnethead
    Registered Users Posts: 429 ✭✭magnethead


    But if I move it directly right, I won't be lined up exactly with that 45..Are you saying bending the pipe into the socket at that length would do no harm? I don't think the seal would be 100% in that case.


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    #20
    Still waters
    Registered Users Posts: 1,166 ✭✭✭Still waters


    magnethead wrote: »
    But if I move it directly right, I won't be lined up exactly with that 45..Are you saying bending the pipe into the socket at that length would do no harm? I don't think the seal would be 100% in that case.

    Read what I quoted


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