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    ? largest diameter hole that can be drilled in a joist?

    thanks a lot for your help Big-all! Cheers Lizzy
  2. C

    ? largest diameter hole that can be drilled in a joist?

    Hi I'm trying to fit a multi crick to a new toilet in my bathroom. Question what is the largest diameter hole that can be drilled in a 175mm x 50mm joist? C16 grade timber..
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