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Plumbing wastes in ensuite within attic conversion

  • 12-01-2016 6:30pm
    #1
    air
    Registered Users, Registered Users 2 Posts: 2,834 ✭✭✭


    Hi,
    I'm looking for some advice in plumbing the wastes in a planned bathroom within an attic conversion.
    The soil stack is in line with the joists so there is an easy path between the joists out over the wall plate and down through the soffit for the waste.

    There will be a wash hand basin, shower and toilet in the proposed bathroom.
    I'm looking for advice on how many waste pipes to run, where to combine them and minimum falls.

    The shower waste will be about 4m away from the wall plate, toilet 2.5m, sink 3.5m, all ball park.
    Joists are 170mm so achieving minimum falls shouldn't be an issue, however advice on optimum falls would be appreciated.
    Also any tips on optimum support intervals for the pipes and any tips for taking the pipes out through the soffit and junctions there etc.
    I'll be putting in a fast flow shower waste and am happy to use the biggest pipe sizes that are practical to avoid any issued down the road instead of penny pinching and risking any future issues.
    Thanks in advance!


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