underground foul drainage

  1. S

    New WC - Does it need a stack/SVP/AAV or can it go direct out to manhole?

    Please help, urgent! First post here, hoping someone can advise. We're planning a new WC in a garage, attached simplified sketch shows the plan. A builder we've been talking to has suggested a 110mm connection leading directly from the WC through the slab, then changing direction slightly to...
    • stforge
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    • drainage drains foul drain foul drainage help new toilet underground foul drainage
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  2. A

    Underground foul drainage

    A few questions about laying underground foul drainage pipes underneath a concrete slab of the building. These are the orange coloured plastic push fit types that will carry toilet waste. 1. There is a rule with push fit that says that the male spigot should always be on the upstream side...
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