The gate is 4ft high by 4ft wide for a garden path and is a standard quality metal gate, so not very heavy.

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    Do you mean how deep should the posts be? Sep 8, 2011 at 13:17
  • Is there a fence next to the gate? Gate posts are usually at (or very near) the height of the fence I believe.
    – Niall C.
    Sep 8, 2011 at 13:21
  • The post is being put at the end of a low wall, it need to be higher then the wall, but I don't know how high it needs to be above ground, or how deep it should go.
    – Walker
    Sep 8, 2011 at 15:17

1 Answer 1


The post should be 4 feet high above ground and deep enough to be set into concrete below the frost line. A 4' hole (8' post) should be more than sufficient. Probably overkill, in fact, but wouldn't go any less than 6' total, 2' below grade, and if you're in the north, definitely go deeper.

  • What do you mean by "the north", is that the north of the USA or the UK?
    – Walker
    Sep 29, 2011 at 13:57
  • Any cold weather climate, really - anywhere that there's a real possibility of ground freeze. Sep 29, 2011 at 14:21
  • Evil Creebo, do you mean anywere it gets below 0c, or are you talking about the wather we don't get in England?
    – Walker
    Sep 29, 2011 at 14:22
  • I mean anywhere that the ground can freeze. Wherever you have the possibility of ground freeze, you want your post to be set deeply enough that the concrete anchor at the base is unaffected by any freezing. If the concrete ends up not being deep enough, the freezing ground will heave the concrete out of position over time. Sep 29, 2011 at 14:24

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