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    caltomsmi's Avatar
    caltomsmi Posts: 2, Reputation: 1
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    #1

    May 2, 2015, 11:30 AM
    How do you tie new foundations from an extension to existing foundations?
    Thanks.
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
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    #2

    May 2, 2015, 11:41 AM
    Someone doing that sort of work... really needs to be experienced in these sorts of things. Or they might fail and cause huge issues with the structure.
    caltomsmi's Avatar
    caltomsmi Posts: 2, Reputation: 1
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    #3

    May 2, 2015, 11:52 AM
    Its hypothetical, I just need to know how, I'm not actually going to do it
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
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    #4

    May 2, 2015, 12:10 PM
    They will all be mechanical ties. Some better than others. Some more suitable in certain situations than others.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #5

    May 2, 2015, 06:10 PM
    If it is a slab, foundations are usually extended by coring into the old slab and tying rebar to the new foundation. Footing the same. If a block wall, they should remove every other corner or wall section block and connect the new wall to it. Sometimes they use bent rebar and fill the block cores.
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