Extending a concrete garage base

Discussion in 'Building' started by billtomlinson22, 28 Oct 2008.

  1. billtomlinson22

    billtomlinson22

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    Hello
    I am currently extending my existing concrete garage base as i have bought a larger garage.
    Does anyone have any tips on the best way of tying in the old base to the new.
    I am extending the rear of the base by 18 inches and as the back of the existing base is 2 feet above ground, and will take the full weight of the rear of the garage i am concerned that if i do not tie them together proprerly then over time the new may break away from the old.
    Many Thanks
    Alan
     
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  3. noseall

    noseall

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    dig the new one under the old one, say 300mm and also thicken the load bearing edges of the new slab providing a 'toe'.
     
  4. Deluks

    Deluks

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    Depending on the thickness of the old slab, you could drill into it from the side, and resin fix some rebar which will be encased in the new slab pour.
     
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