Advertisement
Help Keep Boards Alive. Support us by going ad free today. See here: https://subscriptions.boards.ie/.
https://www.boards.ie/group/1878-subscribers-forum

Private Group for paid up members of Boards.ie. Join the club.
Hi all, please see this major site announcement: https://www.boards.ie/discussion/2058427594/boards-ie-2026

Knocking down a concretar pillar - nightmare job

2

Comments

  • #32
    BDI
    Closed Accounts Posts: 2,005 ✭✭✭BDI


    That used to support something I am sure of it.

    Hopefully whatever it supported is supported some other way now.


  • #33
    [Deleted User]
    Posts: 7,946 ✭✭✭ [Deleted User]


    Read back through your last post. It's not clear, what's sitting on top of the pillar?


  • #34
    v638sg7k1a92bx
    Closed Accounts Posts: 2,912 ✭✭✭v638sg7k1a92bx


    Deleted User wrote: »
    Read back through your last post. It's not clear, what's sitting on top of the pillar?

    Nothing. There is nothing on top of it. Nothing.


  • #35
    BorneTobyWilde
    Registered Users, Registered Users 2 Posts: 39,368 ✭✭✭✭BorneTobyWilde


    There is a way to drill these things, you then pour some special mix into the holes that expands and cranks it into pieces, usually with rock though, this is reinforced concrete


  • #36
    Del2005
    Registered Users, Registered Users 2 Posts: 19,148 ✭✭✭✭Del2005


    Malcolm Fit Supervisor wrote: »
    Could it be supporting the building next door but they had their basement filled in with concrete years ago and there is. I thing sitting on top of this pillar so it’s a mystery what it’s doing there. There’s also bits of wire and cabling mixed in there.

    Video here https://imgur.com/a/GC1TsEA

    Have you had an engineer look over the house? That's a massive construction to have nothing over it now. What previous work/modifications were done?


  • Advertisement
  • #37
    [Deleted User]
    Posts: 7,946 ✭✭✭ [Deleted User]


    Del2005 wrote: »
    Have you had an engineer look over the house? That's a massive construction to have nothing over it now. What previous work/modifications were done?

    From the video you can see metal beams - possibly replacing the other structure.


  • #38
    SmartinMartin
    Registered Users, Registered Users 2 Posts: 2,936 ✭✭✭SmartinMartin


    BorneTobyWilde wrote: »
    There is a way to drill these things, you then pour some special mix into the holes that expands and cranks it into pieces, usually with rock though, this is reinforced concrete

    Think it's called Chinese dynamite. Google it OP, it might actually be of help.


  • #39
    iano.p
    Closed Accounts Posts: 817 ✭✭✭iano.p


    That's not a pillar. I reckon it's an old support wall that's not used now with the rsj doing its job now. was the floor is raised up. Is the house an old 3 story? Con saw and Jack hammer mixed with a few bangs of a sledge will get there.


  • #40
    99nsr125
    Registered Users, Registered Users 2 Posts: 1,200 ✭✭✭99nsr125


    the_pen_turner wrote: »
    Con saw it into sections vertically and horizontally. That will make breaking it a lot easier. Use plenty of water

    Yep

    I've done this taking down piles

    Con saw plus lots and lots of water for dust supression


  • #41
    Odelay
    Registered Users, Registered Users 2 Posts: 4,035 ✭✭✭Odelay


    Was the building always a dwelling? I wonder if the structure was a base for a machine on the first floor?


  • Advertisement
  • #42
    Silent Running
    Registered Users, Registered Users 2 Posts: 2,056 ✭✭✭Silent Running


    I reckon there's a safe in it. :D

    https://www.boards.ie/vbulletin/showthread.php?p=83284149


  • #43
    CH3OH
    Registered Users, Registered Users 2 Posts: 8,169 ✭✭✭CH3OH


    No builder here!
    Could it have been built as a buttress to the main wall of the building?
    Not supporting anything above it but giving support to the structure of the building


  • #44
    v638sg7k1a92bx
    Closed Accounts Posts: 2,912 ✭✭✭v638sg7k1a92bx


    Odelay wrote: »
    Was the building always a dwelling? I wonder if the structure was a base for a machine on the first floor?

    I think that’s the most likely scenario because even the location of it is unusual in that if it was supporting the floor, it was only supporting a very small part of the floor and what the put in was overkill.


  • #45
    foxy farmer
    Registered Users, Registered Users 2 Posts: 3,194 ✭✭✭foxy farmer


    Quite possibly a footing for a chimney.


  • #46
    Idbatterim
    Registered Users, Registered Users 2 Posts: 18,706 ✭✭✭✭Idbatterim


    Get a few of the lads down and a crate or two. Just needs a good bit of manpower!


  • #47
    v638sg7k1a92bx
    Closed Accounts Posts: 2,912 ✭✭✭v638sg7k1a92bx


    Idbatterim wrote: »
    Get a few of the lads down and a crate or two. Just needs a good bit of manpower!

    A crate or two of what?


  • #48
    BarryD2
    Closed Accounts Posts: 4,717 ✭✭✭BarryD2


    An old urban building, a business premises? Cellars in quite a few of these, whether pubs or whatever for storing down below? Presume that large supporting column was built in at a later date, maybe when the building was converted to some other industrial/ business use? Easier to make anyway that take it out!


  • #49
    Still waters
    Registered Users, Registered Users 2 Posts: 1,164 ✭✭✭Still waters


    Would there have been a big chimney built over it at one stage and they just made a big casing and filled with concrete as a foundation, theres not a lot you can do only keep at it, I've been there before many times, try renting a hydraulic pack with a couple of big hammers, it might help the job on a bit


  • #50
    senorG
    Registered Users, Registered Users 2 Posts: 41 ✭senorG


    Small electric mini digger with breaker would sort it - not sure if you could lift it down from the street if you remove some of the timber(?) floor..


    Failing that make sure the contractor is using the best equipment. A modern kango - Hilti TE3000 or the lighter 1000 are better than compressor driven hammers. Both can be hired. Cutting strips in to it with a track wallsaw will help but it's another cost. Plenty of companies supply this service.


  • #51
    Idbatterim
    Registered Users, Registered Users 2 Posts: 18,706 ✭✭✭✭Idbatterim


    Malcolm Fit Supervisor wrote: »
    A crate or two of what?
    Guinness for strength! :D


  • Advertisement
  • #52
    gman2k
    Registered Users, Registered Users 2 Posts: 4,075 ✭✭✭gman2k


    BorneTobyWilde wrote:
    There is a way to drill these things, you then pour some special mix into the holes that expands and cranks it into pieces, usually with rock though, this is reinforced concrete


    It's called chemical rockbreaking.
    A hole is drilled into the rock- usually with a pneumatic machine mounted drill. The chemical breaker is basically fast acting cement, which when it "goes off" heats up very rapidly, which in turn expands the surrounding rock braking it. A pick mount can then pull the rock apart.
    This is generally used in sensitive urban areas to reduce noise and vibrations from standard explosive or mechanical rockbreakers. However the drilling and rock picking are in themselves quite noisy.

    OP, you need to engage a good structural engineer, who will advise on the safest, and least damaging way to remove the RC structure.


  • #53
    CIARAN_BOYLE
    Registered Users, Registered Users 2 Posts: 14,595 ✭✭✭✭CIARAN_BOYLE


    Malcolm Fit Supervisor wrote: »
    Could it be supporting the building next door but they had their basement filled in with concrete years ago and there is. I thing sitting on top of this pillar so it’s a mystery what it’s doing there. There’s also bits of wire and cabling mixed in there.

    Video here https://imgur.com/a/GC1TsEA

    I love imgur sometimes

    This post may contain erotic imagery please confirm you are over 18.


  • #54
    GreeBo
    Registered Users, Registered Users 2 Posts: 27,518 ✭✭✭✭GreeBo


    CIARAN_BOYLE wrote: »
    I love imgur sometimes

    This post may contain erotic imagery please confirm you are over 18.
    well it is s pretty large erection...


  • #55
    GreeBo
    Registered Users, Registered Users 2 Posts: 27,518 ✭✭✭✭GreeBo


    OP I think of use a hole saw along the bottom, cut a hole all the way through leaving only an inch or so between holes.

    Then try pull/push it over.

    Probably easier and cheaper to hire someone.


  • #56
    looksee
    Registered Users, Registered Users 2, Paid Member Posts: 31,313 ✭✭✭✭looksee


    But when you have pushed it over it is still a big lump of reinforced concrete that has to be got out!


  • #57
    BDI
    Closed Accounts Posts: 2,005 ✭✭✭BDI


    GreeBo wrote: »
    OP I think of use a hole saw along the bottom, cut a hole all the way through leaving only an inch or so between holes.

    Then try pull/push it over.

    Probably easier and cheaper to hire someone.

    I don’t think you have seen it. If you pushed it over it’d probably be taller than beforehand


  • #58
    GreeBo
    Registered Users, Registered Users 2 Posts: 27,518 ✭✭✭✭GreeBo


    BDI wrote: »
    I don’t think you have seen it. If you pushed it over it’d probably be taller than beforehand
    Then just push it over again!!


  • #59
    GreeBo
    Registered Users, Registered Users 2 Posts: 27,518 ✭✭✭✭GreeBo


    looksee wrote: »
    But when you have pushed it over it is still a big lump of reinforced concrete that has to be got out!
    then cut it into pieces and tow the pieces out of the cellar.

    Op is never going to break it into rubble


  • #60
    gozunda
    Registered Users, Registered Users 2 Posts: 18,992 ✭✭✭✭gozunda


    Silent Running wrote: »
    I reckon there's a safe in it. :D

    https://www.boards.ie/vbulletin/showthread.php?p=83284149


    Tbh - it sounds more like there's possibly a hole under there - the last poster who found one was never heard from again ...

    https://touch.boards.ie/thread/2057876630/1


  • Advertisement
  • #61
    Odelay
    Registered Users, Registered Users 2 Posts: 4,035 ✭✭✭Odelay


    GreeBo wrote: »
    then cut it into pieces and tow the pieces out of the cellar.

    Op is never going to break it into rubble


    Hmmm, I don’t think you’ve thought this out.


Advertisement
Advertisement