Building a house in Thailand without a foundation?

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Posted in Reader question
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November 7 2018

Dear readers,

I see that in Thailand they build the cheaper houses without a foundation. First, a kind of fine stone gravel is used to raise the construction site by about 80 centimetres, and they let it sink in for a number of weeks. Then they let piles come. Holes are dug for those posts. In the hole they throw some cement and then the pole in the hole. That is all convenient and fast, but sooner or later it will sag, right?

Shouldn't a decent foundation be poured, or is that only for houses with two floors or a heavy roof construction (no corrugated iron)?

Who can tell me?

Regards,

Jef

9 Responses to “Building a house in Thailand without a foundation?”

  1. erik says up

    That hole is really in the hard bottom; a concrete pile is put in there and then concrete is poured that runs out like a clog. But how hard is that surface?

    Where I live, people are now building on an old rice field that has been raised with a meter of red clay and has then rested for more than 10 years. That clay has collapsed and now the plot is as high as before. Holes are made in the clay and the load-bearing posts are placed there. But in between they only excavate 30 cm, deep and wide, concrete will be placed there and then the walls between those posts. THERE it will soon tear because that will have too much to bear.

    Put those poles every two meters and you won't be bothered by anything. I have them every four meters and so I get cracks in the sealed wall. Well, people think, some filler and a lick of paint and it looks neat again ......

  2. PD says up

    Hello Jeff'

    You don't have to be an engineer to know that this will never last.
    That's why .. you see so many cracks in newly delivered revolution construction homes!
    Money here too, cheap is expensive!
    You see a lot of wrong project developers, who only go for the quick profit!
    The houses, (..) are sold without any guarantee' or .. the liable person has left with the northern sun! (Examples galore!)

    The exterior looks nice' and a layman of an elderly foreigner, falls for it again”
    The very best (and cheapest!!) is to buy a building plot yourself.
    These are larger than the average stamps of building plots, and you have much more privacy and enjoyment of life.'
    Most plots in a guarded park are 200 m2 where you can hear the neighbors go to the toilet!
    And when everything has been sold, there will soon be clutter, backlog, deterioration and idleness!

    Furthermore, hire a good contractor who lives in the immediate vicinity, where you want to build your house!
    After all, it is a loss of face to build cheap rubbish in one's own environment!
    The advantage is therefore '.. that you have control in your own hands, and you can determine what the future house may cost!
    Make sure that the building plot has the only legal red chanot!!
    Without chanot' it is mostly farmland, and you are not allowed to build anything on it, just like in the Netherlands!

    Together with the relevant contractor, you can put together a house, according to your personal wishes and wallet.
    Building plots, are offered cheaper privately, on Bath Sold and Udon map, than a greedy sweet-talking estate agent.
    And my personal Tip' is, look where there are hospitals, and shops to get your groceries there every day, or to eat, we're getting older' and then it's very nice to get help quickly.
    Far outside the inhabited world, the building plots are very cheap!
    The closer to a city' or a big place' the building plots have a normal selling price, which gets more and more expensive! (but this is the case worldwide'!)
    Because it is an existence something that you cannot make in a workshop or machine, supply and demand'!

    If you have any questions, you can always ask me via Thailandblog.nl

    P.D.,

    • Erwin Fleur says up

      Betse PD,

      Straightforward 555.
      Quite right.

      We have poured soil on a slight hill in front of our house for about a year
      to lower.
      No problem if you keep an eye on the subsiding soil around the house and fill it up.

      Yours faithfully,

      Erwin

  3. John Chiang Rai says up

    Depending on the surface, whether you are on a former rice field, or how deep the solid ground is, you see different construction methods in Thailand.
    If you want to build on a former rice field, just like in some areas of the Netherlands, you have to drive piles that rest on a solid foundation.
    If the solid subsoil is so deep that it is almost impossible to reach, it is always possible to drive the piles on tack.
    The distance and the weight of these piles is very dependent on the type of house one is going to build, factors such as how heavy the masonry will be, how many floors if any, or with which roof construction will be built play an important role here.
    On a former rice field where the groundwater can often rise, because rising damp can also penetrate the masonry, I would also work with good insulation of the building plate.
    There are also parts of Thailand where the soil quality is better so that the base plate is poured directly onto the earth without the use of piles.
    With this method, the plot is often raised with the necessary soil, and in the best case left alone for a few years, so that the soil has time to settle.
    Here too, the thickness, and the reinforcement of the plate, where I personally would also provide good insulation here to prevent any rising damp.
    We only know foundations that have to be 80 cm deep to protect them against freezing up, so that a good base plate extends completely.

  4. Jan Scheys says up

    my father who was an agricultural engineer and therefore also a geologist told me, when I was excavating my ground for my house in Belgium and noticed that I was completely in a layer of sand, that I could even build on it without a foundation. from that I conclude that everything revolves around whether it is a good solid layer of soil that does not subside because it never freezes anyway!

    • John Chiang Rai says up

      The question “whether one can build in Thailand without a foundation” can be answered with NO.
      Even a concrete slab that is immediately poured on a good load-bearing soil is nothing more than a foundation, which is provided with piles depending on whether the load-bearing earth is deeper.
      Any cracks that are occasionally seen later in the masonry only have to do with the wrong working method with regard to the subsoil, usually caused by ignorance or revolutionary construction and the conscious saving on material.
      Every house in Thailand must also be provided with a Foundation, which can differ depending on the quality of the soil and the type of building that has to support it.

  5. harm says up

    There are different architectural styles all over the world
    Even in the soggy peat bogs of Amsterdam, pile driving is not always necessary
    Often building on sticky is enough and sometimes not even that is done.
    A few years ago I was able to participate in a renovation project in Amsterdam North
    The houses (2 floors) were located in Amsterdam Noord mn. in the Vogelbuurt ONLY on a concrete slab that was laid cold on the peat. So not a single pile!
    Even after 30 years still nothing torn and now after the renovation so ready for another 30 years. At the time, the houses were intended for shipbuilding workers and it was thought that they should be able to last for 25 years.

  6. Tom says up

    You can build like this, but connect your piles with a reinforced foundation and also foundation under your inner walls, only then pour your floor and also use good reinforcement.
    You will need to widen your foundation under each exterior frame you install to prevent cracks in the wall.
    Do use the more expensive Ytong blocks and not the poured blocks for your walls.
    It is the same as building on solid ground in the Netherlands.
    I have already built more than 600 homes and never had any cracks.

  7. Harry Roman says up

    Everything depends on the weight you let the ground carry. You can set up a lightweight hiker's tent on blubber without it tearing.
    My experience since 1993: the Thais have hardly any notion of 3 architectural matters: static calculations, foundations and (heat) insulation


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