Post hole depth

Discussion in 'Carpenters' Talk' started by John Bunyan, Jul 20, 2021.

  1. John Bunyan

    John Bunyan Member

    Now den I have a pergola to build 8 foot above ground with bottoms concreted into soil. If I went in third (4 foot) I'd struggle getting 12 foot 4x4 so thinking of 4x3 wall plate with 3 or 4 foot in ground
     
  2. pppmacca43

    pppmacca43 Super Member

    3 foot more than enough, u will end up in Australia lol
     
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  3. FlyByNight

    FlyByNight Well-Known Member

    Why do you think you need 4 feet in the ground?

    Do an on-line search and most recommend 1/3 of te height above ground. So. 2.4m (8') above means 800mm (32") below.
     
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  4. Severntrent

    Severntrent Screwfix Select

    All this depth of post is based a on fencing which is subject to high wind loads, have you ever watched the depth of a telegraph pole or street lamp
     
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  5. John Bunyan

    John Bunyan Member

    Well that settles it, 800 to 900 will do for me ta. If I hit oil I'll share the winnings
     
  6. Lesley Mayhew

    Lesley Mayhew New Member

     
  7. Lesley Mayhew

    Lesley Mayhew New Member

    Could you possibly help me and tell me if this is how a finished fence should look many thanks the post are always wobbley it's a fence a neighbour has had put up but it leads onto my drive and part of garden thankyou for any advice
     
    Last edited: Jul 24, 2021
  8. Abrickie

    Abrickie Screwfix Select

    I can honestly say that I can’t see anything wrong with the fence ;)
     
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  9. John Bunyan

    John Bunyan Member

    I concur, I even put my glasses on to have a good look and it seems fine to me too
     
    Abrickie likes this.
  10. pppmacca43

    pppmacca43 Super Member

    Looks alright to me lol
     
  11. pppmacca43

    pppmacca43 Super Member

    Photos might help:)
     

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