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    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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    Bridging inner and outer leaf

    What brickwork or block pattern would be the best for bridging 2 leafs (on purpose) as an alternative to wall ties? For the moment just take for granted there are reasons for doing this and set aside any concerns about damp. The intent is that both walls would be load bearing. My proposal is...
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    Diagonal wall blockwork

    This is the plan view of a diagonally arranged doorway between two block walls. 1 square = 1 cm. The orange rectangles are 100 mm padstone allowance for the lintel and the green is the opening. I am using medium density concrete blocks 44 x 21.5 x 10 cm laid with the 44x10 face down. Do I have...
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    Dismantle cast iron/lead socket joint

    I want to remove a swan neck fitting from the top of a cast iron soil stack which is about 4"/100 mm diameter. This piece attaches to the vertical stack with a lead-sealed socket joint (see sketch). How can I dismantle this joint? I don't want to damage any of the main vertical pipe, including...
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    Soil pipe modifications

    The soil pipe from my 1st floor toilet is currently arranged as shown in 'current arrangement' sketch, attached. There is an original cast iron swan neck which is half embedded in the concrete roof of the extension. This means that the roofing felt has been sort of draped over the pipe as it...
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    Easy access flooring

    Does anyone have any good ideas for 1st floor flooring that is relatively easy to lift and get access to the voids between the joists? I originally considered just getting new, screwed-down floorboards (existing boards are sound enough but quite rough and knackered visually) that I would then...
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    Staircase riser - structural?

    If possible I want to undercut the bottom-most riser of a staircase (to allow continuous laminate flooring planks to be slid underneath). See attached photo, circled in red. However, I don't know if it's a structural part, or whether there is any other reason I shouldn't cut it. Can someone advise?
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