Concrete Fence Post - Help

[Samuk007]

Hi,

Can some please please let me know if I will be okay with this - I have installed once post and not sure if this is normal.

The post is near 470mm under ground (from the tarmac) I have also filled with concrete.

The top of the post is moving little left (8mm - 10mm) if I move it by hand at the top - and once the next panel is in this should not move. Movement is not in the base and mid to top only.

Is this normal / will I be okay?

Any help appreciated..as I needed to do the next post and not sure if I should buy longer posts (then my current 2.4m ones.

 

[DAZB]

I think you would be better digging deeper holes and a general rule i use is 1/3rd below ground and 2/3rd's above. That would mean using 2.7m posts if you have 1.8m panels but it is only a guide and you could dig down to 600mm and pack with bricks and more postmix or concrete to make it more stable.

 

[Samuk007]

Thanks digging more I would have to do for the other 2 posts - and it’s a pain as it’s all concrete..

Though I am wondering if this 10mm movement at the top is normal and if I would have this if I did happen to go deeper.

Correction post is 470mm under ground

 

[freddiemercurystwin]

When you move the post at the top is there any movement at all in the post at the base ie is it loose in the hole at all? Or is it just the post flexing? 400mm is not very deep.

 

[Koolpc]

No way should a concrete post flex.....or move..it should be solid if deep enough.

 

[JohnD]

The post is near 470mm under ground (from the tarmac) I have also filled with concrete.

The top of the post is moving little left (8mm - 10mm) if I move it by hand at the top -

It's cracked.

 

[bob_fossil]

No way should a concrete post flex.....or move..it should be solid if deep enough.

It's cracked.

Yeah, there's shouldn't even be that kind of movement right when you've stitched it and the concrete is still wet. It's damaged, there's a crack lower down and just the steels are preventing it toppling. Leave it like that and over time moisture and ice with have the crack open up and the reinforcing with corrode quicker than it would have.