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    billybard's Avatar
    billybard Posts: 4, Reputation: 1
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    #1

    Nov 23, 2006, 03:51 PM
    Tying new foundation to old?
    What is the preferred method of connecting a new foundation (footing and stem wall) to an existing foundation?

    Drill holes in old concrete and put a 12" piece of #4 rebar in it with expanding epoxy -- or is there a better way?

    What requirements have any of you had to meet in the past with such an add-on?
    DwightB's Avatar
    DwightB Posts: 15, Reputation: 2
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    #2

    Nov 26, 2006, 08:15 PM
    That's the exact method that our structural engineer usually recommends for the architectural firm that I work for. Do not under cut the existing structure. Don't make any excavation that invades a 45 degree slope from existing bearing surface.
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