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building on two meter water table.

  • 21-07-2013 2:26pm
    #1
    recipio
    Registered Users, Registered Users 2 Posts: 2,804 ✭✭✭


    :confused: People,I have a site about 500 metres from a lake and the water table is about two meters down. I know this because I did a soil survey before abandoning a housebuild a few years ago.
    The ground feels dry and there is a house in an adjacent field about 300 meters away.
    I'm re-visiting the idea of building again. I'd like block/brick as opposed to timber frame and that's just for a sense of security - I'll be incorporating a workshop as well.
    Is two meters enough for conventional foundations or am I looking at some kind of piling. ? Is there much difference is costs. ? I know this is a rough 'guestimation' - maybe somebody out there has experience of this.?

    thanks.


Comments

  • #2
    sky6
    Registered Users, Registered Users 2 Posts: 1,444 ✭✭✭sky6


    I think Piling is your safest and best option. A precast Raft system to Floor level then you build what you want on top of that. Pre cast is very good for dealing with such problems and is not very expensive relative to other methods. I'd talk to the precast companies as they will have experience of doing this type of work before.


  • #3
    Poor Uncle Tom
    Registered Users, Registered Users 2 Posts: 14,547 ✭✭✭✭Poor Uncle Tom


    A two metre watertable is not abnormal, what is the fluctuation range?


  • #4
    recipio
    Registered Users, Registered Users 2 Posts: 2,804 ✭✭✭recipio


    sky6 wrote: »
    I think Piling is your safest and best option. A precast Raft system to Floor level then you build what you want on top of that. Pre cast is very good for dealing with such problems and is not very expensive relative to other methods. I'd talk to the precast companies as they will have experience of doing this type of work before.

    Thanks,
    is precast concrete beams filled in with blocks or slabs , or just slabs joined to the piling.? As for the fluctuation range I have no idea, I had to get a survey to make a planning application and that had more to do with the effluent treatment.
    I'm just tossing ideas around at present, the next step is to find a competent architect.


  • #5
    sky6
    Registered Users, Registered Users 2 Posts: 1,444 ✭✭✭sky6


    You can get both type for infill between piers depending on Spans etc.
    Maybe you could check with anyone else who built in the area.
    For the Water table, as the mod has said 2 metres is not abnormal in this country. Also as the mod has said is it constant at 2 meters Winter and Summer or does it rise significantly in Winter. ?
    The right Architect will be important.


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