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Contractor drilled a 4 inch hole through the center of a load bearing wood beam. The beam is made up of 3 2x8 sistered together. How can I fix his mistake.

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    You don't. You get the contractor to fix or replace the beam. Take pictures and start to get ready to send them to your local boards/building inspectors, if contractor does not repair at his expense.
    – crip659
    Oct 11, 2022 at 17:24
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    Not your problem. You may be able to ask on Law.SE for the best way to sue.
    – Chenmunka
    Oct 11, 2022 at 17:28
  • How does he fix it without replacing the beam?
    – Need help
    Oct 11, 2022 at 17:29
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    You need a structural engineer if you are looking for creative options (i.e. not replacing the beam) Plugs and glue are completely deficient to repair a load bearing member, glue is not used for structural purposes and the plug would not return the strength; this is not welding. Oct 11, 2022 at 17:56
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    You may want to consider a post underneath until you get it repaired properly. Maybe two posts, one on each side of the hole. Oct 11, 2022 at 18:48

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Any structural feature not covered by the framing manual is going to need the blessing of a structural engineer.

If the hole is important it can probably be accommodated in the solution at little cost, the engineers consulting fee will likely outweigh material costs.

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