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Foundation issues

  • 08-06-2009 9:38pm
    #1
    Jloner2
    Closed Accounts Posts: 11 ✭


    Poured my foundations a few weeks ago. Calculated the amount of concrete needed and a bit extra but still went short. About 1" down on one gable wall and around corner so, I cut grooves in concrete surface and put down 2x1 lattes and filled with motar. Anyone thing this is a bad idea. I'll be getting onto a blocklayer soon so he might be able to shed some light on this.

    Thanks for any input


Comments

  • #2
    sydthebeat
    Subscribers Posts: 42,569 ✭✭✭✭sydthebeat


    Jloner2 wrote: »
    Poured my foundations a few weeks ago. Calculated the amount of concrete needed and a bit extra but still went short. About 1" down on one gable wall and around corner so, I cut grooves in concrete surface and put down 2x1 lattes and filled with motar. Anyone thing this is a bad idea. I'll be getting onto a blocklayer soon so he might be able to shed some light on this.

    Thanks for any input

    did you have an engineer / architect sign it off?

    the design of the foundations are directly linked to the soil conditions so its very hard for anyone to comment without having seen the open founds.

    what depths have you poured? throughout?
    what level of steel reinforcement have you?
    what is your proposed wall construction, including thickness's?
    whats your house type? single storey, 1/2 or 2 storey?


  • #3
    Graaaaa
    Registered Users, Registered Users 2 Posts: 69 ✭✭Graaaaa


    As Syd said, you need to check with whoever is going to sign off.
    The concrete is really meant to be monolithic in it's thickness in order to transfer the weight of the building to the ground. If the concrete is now thinner than designed then it may crack or fail completely under the wall.
    I personally wouldn't allow the mortar as part of this thickness, unless it was a proprietary concrete repair mortar mixed according to manufacturer's instructions and bonded to the concrete by scabbling and wetting the surface.
    The timber latts will most likely decay in the soil and possibly swell in the process, cracking off the mortar you laid on top.
    You really need to get an engineer to measure and do a design check.
    Hope it works out


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