1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Best way to support floor after chimney removal

Discussion in 'Floors, Stairs and Lofts' started by zedox, 22 Apr 2018.

  1. zedox

    zedox

    Joined:
    22 Apr 2018
    Messages:
    3
    Thanks Received:
    0
    Country:
    United Kingdom
    So after a long weekend of removing my chimney from the attic and 1st floor I’m stuck!

    It looks like the 1st floor joists are sitting on timbers that are resting on the chimney.

    Whats the best way to tackle this?
    8D320F72-505E-4DD0-B620-92ED13027662.jpeg A9B0ED18-9533-4D47-AA05-693C65B3775A.jpeg 6AD8C9F4-22A5-4D95-A84D-77EE700BBB83.jpeg

    This is a bedroom that is going to be repurposed into a bathroom. Structural engineer said the chimney was could be removed completely without any calculation. I think he might be wrong.

    Any advice is greatly appreciated!
     

    Attached Files:

  2. blup

    blup

    Joined:
    5 Nov 2007
    Messages:
    937
    Thanks Received:
    134
    Country:
    United Kingdom
    To increase your chances of receiving advice could you upload a photo(s) from the floor below to show what is supporting the very substantial constructional hearth you have partially dug out, and which appears, judging by the lath and plaster, to go below the ceiling level?

    Cheers,

    Blup
     
  3. zedox

    zedox

    Joined:
    22 Apr 2018
    Messages:
    3
    Thanks Received:
    0
    Country:
    United Kingdom
    Hi Blup
    Thanks for the advice. Here is a photo of the remaining chimney breast in the room below.
    A4C5F058-427A-448B-B89C-18BAEA17FD3C.jpeg
     
  4. blup

    blup

    Joined:
    5 Nov 2007
    Messages:
    937
    Thanks Received:
    134
    Country:
    United Kingdom
    It looks like some rudimentary form of gallows bracket which was put in after the ground floor chimney breast was removed in order to support the upper floor chimney that you have just taken down. But it appears still to be supporting the timber over which the joists are notched, and, as you imply, to be performing a structural function in this regard.

    I am a DIYer not a structural engineer or other expert, so these are my observations, not advice.

    Your own SE would doubtless be willing to view what you have done and give further advice.

    Not to alarm you, but building control have a function in relation to dangerous structures, and may well be be willing to visit and give advice if you remain concerned.

    Cheers,

    Blup
     
  5. zedox

    zedox

    Joined:
    22 Apr 2018
    Messages:
    3
    Thanks Received:
    0
    Country:
    United Kingdom
    Thanks Blup
    SE has suggested two options.
    • Extending the joists into the wall (which is a party wall btw)
    • Install a steel below the joists
    I have a few builders coming to give me their suggestions too.

    I’m thinking of propping the floor from below. Partially removing the ceiling to expose the binder and joists. Remove the remaining breast. Remove the binders. Then replace them with similar sized steel the entire length.
     
  6. blup

    blup

    Joined:
    5 Nov 2007
    Messages:
    937
    Thanks Received:
    134
    Country:
    United Kingdom
    Whilst informal suggestions are always useful, I think the correct order is that the SE formally specifies the work (having done the necessary calculations), and the builder prices and works to that specification, unless he believes there is something manifestly wrong with it.

    Cheers,

    Blup
     
Loading...

Share This Page