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Installing Victorian cast soil stack design help

Discussion in 'Plumbing and Central Heating' started by Bullet-Proof_Biscuit, 12 Mar 2021.

  1. Bullet-Proof_Biscuit

    Bullet-Proof_Biscuit

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    Hello,

    I am planning to reinstate a period original cast soil stack on my Victorian semi, this will be a slow project as I will source most of the bits reclaimed and be thoroughly prepared before the changeover from PVC so there is minimal bog use down time..

    Anyway, as you can see existing PVC stack here. And there are three below ground foul drain points: 1. the gulley with RWP & wastes, left most, 2. the 4" stack, and 3. the brick out house. The out house will be demolished.

    20210312_094629000_iOS.png

    Room above is bathroom, where I will be moving the WC pan to the left wall, on the pane of the RWP, so rather than have the soil and RWP cross over, I plan to swap their positions like so:

    20210312_094833000_iOS.jpg

    And replace the trap gully with a rest bend to accept the foul stack.

    Yes, connecting the gutter round the corner to the RWP on the rear elevation will take some doing, but solvable..

    As indicated, the RWP would then be directed to the rear garden for a SUDS complaint soakaway, and the existing 4" belowground soil connection for it made redundant.

    The new cast iron 4" stack serving the new WC pan position on the new elevation (left) would then need to accept the WHB & shower/bath wastes, see marked 'x' in red for wastes requiring connection, presumably I join them into a 50mm PVC within the floor void(?), so then I only have one boss branch connection (green) to make on the stack branch serving the WC?

    20210312_134924101_iOS.jpg

    My questions are a) is this correctish? And b), How do I connect a 2" onto a 4" pipe, because I can only find 4" branches.. I can only find 4" pipe with a 2" swept connection in vintage plumbing catalogues and google images.. Do they still exist, or were they rare in the first place? NB I will be using reclaimed everything for this, and I have trawled reclamation yards to no avail so far.. :(

    Any help appreciated!

    TIA
    HH
     
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  3. Bullet-Proof_Biscuit

    Bullet-Proof_Biscuit

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    I am also wondering, being 2", can I connect on with a 90deg boss, 135deg Y branch, or 92.5deg swept branch, or doesn't it matter? Thinking I'll grab whatever I can find hopefully, if either will work!!
     
  4. Nige F

    Nige F

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    I've got a caulking iron somewhere , but you'll need a lead melting pot and ladle . Some pipe nails and a youthful muscley body :ROFLMAO:
     
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  5. Bullet-Proof_Biscuit

    Bullet-Proof_Biscuit

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    haha yes well, I have been advised I need to make three different sized caulking irons from rebar, in a coal fire, over an anvil..
    funny thing was, my only question then was; how do I make oakum!

    Pipe nails for the collar ears holding to the masonry you mean? I have been thinking to use SS fixings because my clay bricks seem very keen on turning back into clay already..
     
  6. Hugh Jaleak

    Hugh Jaleak

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    Do you want cast for the sake of it, or for the appearance? Some Manufacturers do an imitation 'Cast' style range in uPVC, e.g. 110mm "Cast Iron" Style Archives - FloPlast - FloPlast

    Secondly, check suitability for a soakaway, might need to be a rather large hole. Chances are rainwater and stack go into the same drain already, just swap the positions round, and fit a gulley on the existing soil connection.
     
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  7. Bullet-Proof_Biscuit

    Bullet-Proof_Biscuit

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    I want old cast for the sake of the appearance yes, I dislike plastic tat on my 1800's walls. Besides I can build the entire stack for about £150 and I know a local media blasting & painting firm near me to get them freshened up. I doubt anything new or imitation can be bought for anything near that price, new cast branches are about £150 each!

    Yeah it's combined drainage, I have happy to do my bit relieving the sewer of storm water though. Besides, I have a plan involving a tank and a green house...
     
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  9. Madrab

    Madrab

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    You can get 100/110mmm heritage spec cast iron that uses modern double o-ring seals, one's called simplefit but I'm sure there are others, not cheap though. Then you just use a good quality black silicone to back fill the join rather than using an original caulk or cord system.
     
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  10. Bullet-Proof_Biscuit

    Bullet-Proof_Biscuit

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    Agreed. I've been shopping about for an old salt glazed clay one..
     
  11. Hugh Jaleak

    Hugh Jaleak

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  12. JimCrow

    JimCrow

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  13. Bullet-Proof_Biscuit

    Bullet-Proof_Biscuit

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    I put a bid on those now thanks!

    Something like this, preferred stack branch in blue, alternate option to achieve top waste connection in red..

    I realised my bog pan is bottom connection so the discharge will be through the floor void so even less clearance for the waste to connect to the top.. 20210314_043736685_iOS.jpg
     
  14. DIYnot Local

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