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What size steel thread and bolts for chemical resin to wall plate

Discussion in 'Tools and Materials' started by Michael Zenonos, 23 May 2020.

  1. Michael Zenonos

    Michael Zenonos

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    I am doing an extension 5.5m long and 3 m wide. The roof has to span longways and joists are 300mm deep. I have to put a timber wall plate to the existing house wall and wanted to know what size bolts I need. I was thinking M12 200mm.

    Any help with the size and spacings of the bolts would be appreciated.
     
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  3. catlad

    catlad

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    One between every joist 120mm unless you have a solid wall
     
  4. Michael Zenonos

    Michael Zenonos

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    The wall plate is on a solid brick wall. It sure what size bolts to use
     
  5. oldbutnotdead

    oldbutnotdead

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    Not wanting to teach granny to suck eggs but you sure it is a solid full brick wall & not a cavity brick wall?
     
  6. Michael Zenonos

    Michael Zenonos

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    Yes the wall is solid no cavity. It’s Victorian
     
  7. catlad

    catlad

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    Well in that case you can use 200mm
     
  8. ^woody^

    ^woody^

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    You would only need a fixing depth of 80mm, and no need for resin unless the bricks are crumbly.
     
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