DIY Doctor

Posts for heavy gates sagging

Postby asdf345 » Sun Oct 07, 2007 9:08 pm

We have a pair of 6ft gates (4ft high) on 6x6 posts that were put in for us last year. We have now discovered the gates are dropping in the centre due to the posts sagging inwards. We cannot contact the original tradesman and had another come around to quote to repair them. He told us that the problem was due to the posts being softwood and needed to be replaced, but he never came back with a quote (story of our lives), so we're left with the problem of sorting it ourselves. Having dug out the posts they seem to have been set in deep enough (about 3ft) and with sufficient concrete. Is it right that the posts being made of softwood could in itself be the cause (it doesn't make sense to me, maybe someone could explain?). In addition, the bottom of the post holes have about 6 inches of water in them, so not sure if that would affect the strength (there's no evidence of rotting in the posts). Could someone please advise us what to do?

Thanks very much
Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Sun Oct 07, 2007 8:50 pm


Simply Build It

Postby tradeaway » Tue Oct 16, 2007 9:35 pm

people often underestimate the leverage that weighty gates have on a gate post.

this means that the concrete foundations are often too weak.

it is not unusual to concrete-in an upright r.s.j., deep into the ground, and weld some hinges to the girder. this would be clad with bricks.

i doubt that the presence of hard or soft wood is relevant in this case. its construction is simply not 'man' enough for the job
Rank: Apprentice
Progress to next rank:
Posts: 7
Joined: Tue Oct 16, 2007 9:16 pm

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics