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DO I have to have an S Trap under the shower?

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  1. #1
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    Default DO I have to have an S Trap under the shower?

    Im planning to run from the shower drain to a 'squashed trap?" (not sure what its called, but it is an open drain in the concrete slab that allows 3 x 50mm pipes into it. squashed something ..

    My question is - Can I run straight from the shower to the squashthing without an s or p trap?

    There is a timber beam thats obstructing me putting a trap directly under the shower. It can be removed but easier not to..

  2. #2
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    Depends on how far it is from the shower to the 4way riser.
    Plumbers were around long before Jesus was a carpenter

  3. #3
    PLU.MBR.BL.DR. bricks's Avatar
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    you can go 1.2 m absolute maximum of pipe length (including the fittings and trap)
    also after 3 years it will stink from the soap in the line.
    If you dont play it, it's not an instrument!

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    ok, I'll check the measurement. It will be close to 1.2 m

    so, what do you guys think am I better off putting in a trap because of the stink factor ?

  5. #5
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    If its already going into your "squashed trap" or 4 way riser which is part of your floor waste, the 4 way riser is already trapped but you can only have 1.2m of pipe from the top of the shower grate to where it meets the floor waste otherwise you will have to put a "s" trap under it which will allow you to run it up to 2.5m in length. Make sense?
    Plumbers were around long before Jesus was a carpenter

  6. #6
    PLU.MBR.BL.DR. bricks's Avatar
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    Quote Originally Posted by Daren View Post
    ok, I'll check the measurement. It will be close to 1.2 m

    so, what do you guys think am I better off putting in a trap because of the stink factor ?
    yes put a trap in if you can,
    also the drain does not need to be in the centre of the shower

    the problem is soap and lint build up, it can cause a smell like musty old person type smell. it's not unbearable, just annoying.
    If you dont play it, it's not an instrument!

  7. #7
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    yea ok, I'll put an s trap in then

    so after the s trap, should I still go to the 4 way riser or plumb it into the 100mm toilet pipe (sewer line) ?

    the water in the s trap will stop the musty smell right?

  8. #8
    PLU.MBR.BL.DR. bricks's Avatar
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    yeah it's a better job
    If you dont play it, it's not an instrument!


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