Internal waste pipes, eg. Bath, shower, sink.

Discussion in 'Misc DIY' started by Lawrence, Dec 9, 2003.

  1. Lawrence

    Lawrence Guest

    Not been very succesfull on searching the newsgroup & FAQ to find out
    the regulations on waste pipe plumbing. Any pointers would be
    appreciated.

    i.e. what sort of traps and whether you can join waste pipes before
    the go through the wall to the gulley. When Buidling Control where
    here he wanted to see the trap for the bath before signing off on it.

    What I doing is a new kitchen and bathroom.

    In the kitchen:
    I want to connect the kitchen sink and washing machine into one pipe
    (40mm) before going through the wall.

    In the bathroom:
    To join a shower waste and bath waste before going through the wall to
    a gulley. For the wash basin I have spotted a toilet coupler that has
    a boss on it for a 40mm waste pipe which would reduce the pipework by
    4 meteres. The toilet outlet goes straight down and through the
    footings to a manhole. The rest will be going to an open gully outside
    and then into the waste system.


    Lawrence

    usenet at lklyne dt co dt uk
    Lawrence, Dec 9, 2003
    #1
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  2. Lawrence

    Guest

    Lawrence <> wrote:
    > Not been very succesfull on searching the newsgroup & FAQ to find out
    > the regulations on waste pipe plumbing. Any pointers would be
    > appreciated.
    >
    > i.e. what sort of traps and whether you can join waste pipes before
    > the go through the wall to the gulley. When Buidling Control where
    > here he wanted to see the trap for the bath before signing off on it.
    >
    > What I doing is a new kitchen and bathroom.
    >
    > In the kitchen:
    > I want to connect the kitchen sink and washing machine into one pipe
    > (40mm) before going through the wall.
    >
    > In the bathroom:
    > To join a shower waste and bath waste before going through the wall to
    > a gulley. For the wash basin I have spotted a toilet coupler that has
    > a boss on it for a 40mm waste pipe which would reduce the pipework by
    > 4 meteres. The toilet outlet goes straight down and through the
    > footings to a manhole. The rest will be going to an open gully outside
    > and then into the waste system.
    >

    Isn't there an issue with waste water 'coming up' a lower waste pipe
    if you plumb more than one together before they get to a big waste
    pipe? E.g. if you pull the plug out on the bath with a full bath
    won't the water come out of the shower waste into the bottom of the
    shower as well as running down the drain?

    I was hoping to join two wastes in my re-plumbed bathroom (washbasin
    and bath) but the above problem suddenly occurred to me and I don't
    think I can do it. Unless, of course, one-way valves can be put into
    waste pipes.

    --
    Chris Green ()
    , Dec 9, 2003
    #2
    1. Advertising

  3. "Lawrence" <> wrote in message
    news:...
    > Not been very succesfull on searching the newsgroup & FAQ to find out
    > the regulations on waste pipe plumbing. Any pointers would be
    > appreciated.
    >
    > i.e. what sort of traps and whether you can join waste pipes before
    > the go through the wall to the gulley. When Buidling Control where
    > here he wanted to see the trap for the bath before signing off on it.
    >
    > What I doing is a new kitchen and bathroom.
    >
    > In the kitchen:
    > I want to connect the kitchen sink and washing machine into one pipe
    > (40mm) before going through the wall.
    >
    > In the bathroom:
    > To join a shower waste and bath waste before going through the wall to
    > a gulley. For the wash basin I have spotted a toilet coupler that has
    > a boss on it for a 40mm waste pipe which would reduce the pipework by
    > 4 meteres. The toilet outlet goes straight down and through the
    > footings to a manhole. The rest will be going to an open gully outside
    > and then into the waste system.



    Not sure if you'll be able to access these directly but wickes good idea
    leaflets are a good place to start

    http://www.wickes.co.uk/content/ebiz/wickes/images/gil/73.pdf
    http://www.wickes.co.uk/content/ebiz/wickes/images/gil/74.pdf

    and the building regulations can be downloaded from

    http://www.odpm.gov.uk/ (follow Building Regulations, then The Building Act
    1984 and building regulations, Approved documents)

    As your taking about pipe work at 4m, your main problem may be the allowable
    pipe lengths. Nevertheless I'm pretty sure that the 1st one in the kitchen
    is fine, as you can buy a sink trap which has a connector for the washing
    machine.

    The second one - not sure. I guess the main problem would be if the bath /
    shower were on different elevations, hence water flowing into one or the
    other, rather than to waste. Thus as you've got a BCO, better ask him/her.

    Jon
    Jonathan Pearson, Dec 9, 2003
    #3
  4. Lawrence

    Toby Guest

    wrote:
    > I was hoping to join two wastes in my re-plumbed bathroom (washbasin
    > and bath) but the above problem suddenly occurred to me and I don't
    > think I can do it. Unless, of course, one-way valves can be put into
    > waste pipes.


    A running HepVo should work well as a one way valve in this situation.

    --
    Toby.

    'One day son, all this will be finished'
    Toby, Dec 9, 2003
    #4
  5. Lawrence

    Witchy Guest

    On 9 Dec 2003 12:19:31 GMT, wrote:

    >Isn't there an issue with waste water 'coming up' a lower waste pipe
    >if you plumb more than one together before they get to a big waste
    >pipe? E.g. if you pull the plug out on the bath with a full bath
    >won't the water come out of the shower waste into the bottom of the
    >shower as well as running down the drain?


    I wondered about that too as I was joining the cloakroom sink into the
    shower waste, but with the t-piece having a 90 degree corner on it we
    don't get that water coming up the shower. I also put in a drop out of
    the shower trap so that may be helping matters.

    >I was hoping to join two wastes in my re-plumbed bathroom (washbasin
    >and bath) but the above problem suddenly occurred to me and I don't
    >think I can do it. Unless, of course, one-way valves can be put into
    >waste pipes.


    What I did outside was make sure both pipes have a 90 degree fall on
    'em as soon as they leave the house....water'll have to be going some
    to get back up those :)
    --
    cheers,

    witchy/binarydinosaurs
    Witchy, Dec 10, 2003
    #5
  6. Lawrence

    Lawrence Guest

    Sounds like I will have to talk to BCO as the building reg approved
    cocumenst seem to be more focused on large pipes.

    On Tue, 9 Dec 2003 12:26:41 -0000, "Jonathan Pearson"
    <> wrote:

    >"Lawrence" <> wrote in message
    >news:...
    >> Not been very succesfull on searching the newsgroup & FAQ to find out
    >> the regulations on waste pipe plumbing. Any pointers would be
    >> appreciated.
    >>
    >> i.e. what sort of traps and whether you can join waste pipes before
    >> the go through the wall to the gulley. When Buidling Control where
    >> here he wanted to see the trap for the bath before signing off on it.
    >>
    >> What I doing is a new kitchen and bathroom.
    >>
    >> In the kitchen:
    >> I want to connect the kitchen sink and washing machine into one pipe
    >> (40mm) before going through the wall.
    >>
    >> In the bathroom:
    >> To join a shower waste and bath waste before going through the wall to
    >> a gulley. For the wash basin I have spotted a toilet coupler that has
    >> a boss on it for a 40mm waste pipe which would reduce the pipework by
    >> 4 meteres. The toilet outlet goes straight down and through the
    >> footings to a manhole. The rest will be going to an open gully outside
    >> and then into the waste system.

    >
    >
    >Not sure if you'll be able to access these directly but wickes good idea
    >leaflets are a good place to start
    >
    >http://www.wickes.co.uk/content/ebiz/wickes/images/gil/73.pdf
    >http://www.wickes.co.uk/content/ebiz/wickes/images/gil/74.pdf
    >
    >and the building regulations can be downloaded from
    >
    >http://www.odpm.gov.uk/ (follow Building Regulations, then The Building Act
    >1984 and building regulations, Approved documents)
    >
    >As your taking about pipe work at 4m, your main problem may be the allowable
    >pipe lengths. Nevertheless I'm pretty sure that the 1st one in the kitchen
    >is fine, as you can buy a sink trap which has a connector for the washing
    >machine.
    >
    >The second one - not sure. I guess the main problem would be if the bath /
    >shower were on different elevations, hence water flowing into one or the
    >other, rather than to waste. Thus as you've got a BCO, better ask him/her.
    >
    >Jon
    >
    >
    >


    Lawrence

    usenet at lklyne dt co dt uk
    Lawrence, Dec 10, 2003
    #6
    1. Advertising

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