Concrete in WPC fence post

  • Erstellt am 2022-07-26 21:47:44

cschiko

2022-07-27 14:25:26
  • #1
I see it similarly! What might work, but is not really a clean solution:

1. On the garden side, dig down accordingly at the spots and then "hollow out" under the stones. The problem here will likely be that especially the gravel keeps slipping again and again.
2. If you manage to do it somewhat cleanly, you could pour the foundation with a small formwork and insert the iron and posts from above.

But it's all improvised, and I suspect that you can't neatly "undermine" the wall with a clean boundary.
 

Tolentino

2022-07-27 14:34:22
  • #2
I don't know what the 25 dimension is. But if that is the width, which to me looks like it from the pictures, then it has a clear width of about 17 (-8cm for the 2x wall thickness). That is the diameter of a typical earth auger. If he really left a hole like that every 1.8m, he can easily pour 80cm deep footing foundations there. Reinforcement inside, also reinforce the stone rows horizontally. In my opinion, it should hold, but I am not a structural engineer.
 

Tolentino

2022-07-27 14:46:01
  • #3
Oh, a small addition. I wouldn't use WPC for the posts, if that was the idea. They should be made of steel, or at least aluminum. If WPC absolutely has to be used (because of the look or something), then don't embed them in concrete but use post shoes and then anchor them onto the stones.
 

AD1988

2022-07-27 21:27:44
  • #4
Thank you very much for the many ideas and suggestions. Exactly for this reason I asked here because I don’t want to put together something I will regret later.

For the WPC fence, aluminum posts are used, which I can even order up to 300 cm in length, so there should be enough material for concreting in place. The holes in the masonry bricks have a diameter of about 15.5 cm. Here I wanted to get a 130 mm drill bit and try to drill at least 50-80 cm below the ground surface. This would mean that up to 1.2 m of the post would be embedded in concrete. Shouldn’t this actually be sufficient?

We also had the idea to get a WPC fence that has 2-5 mm gaps between the individual elements. Would this change the wind load at all or would it hardly make any difference?
 

WilderSueden

2022-07-27 22:14:53
  • #5
The idea with the drill is not a bad one in itself and could work, but 13cm is really not much diameter and accordingly also little pressure in the soil.

Whether such narrow gaps really provide serious relief, I don't know. That probably causes turbulence on the other side, and that is pressure again.
 

Similar topics
20.02.2018Foundation/Substrate WPC Terrace36
09.08.2018Fence as sound insulation towards the neighbor. What inhibits sound the best?27
11.10.2019Fence incorrectly installed after subsequent slope10
31.08.2023Fence wanted - pictures and suggestions welcome!33
04.10.2021The post of our driveway gate protrudes about 10 cm onto the neighboring property37
08.09.2020How to best cover a fence post?10
26.09.2020Border design - neighbor wants a fence, we want a hedge29
30.11.2021Enclosure - Fence or no fence / what do we need to consider?28
09.02.2022Fence during new construction (Bavaria), neighbor boundaries11
07.04.2022Who actually owns which fence?17
02.07.2023Fencing in RLP: Is a small fence allowed on private property?40

Oben