HELP a Newbie

[Norcon]

Its only to hold a fence. Its not the Hoover dam.
I'd dig a few deep holes with a spade and place new posts in holes.
I'd probably use concrete posts. Then fix fence to posts. Job done.

Some of the hire companies do auger machines. You could check with them first and if they have one that will go say 1.2m or more then I might go with that.

 

[Alastairreid]

Its a retaining wall the op wants to build!

 

[middleman]

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[freddiemercurystwin]

Needs to be SE designed otherwise you're just peeing the wind.

 

[middleman]

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[r896neo]

1.2m is a common maximum before seeking SE advice.

As I tried to explain in your other thread and numerous others on here are trying to explain that a normal retaining wall is probably not suitable in this situation hence all the talk of gabions or just living with it and putting up a fence.

Using concrete posts and a couple of concrete gravel boards you could easily and relatively cheaply retain a couple of feet and then panels on top.

However, you seem to have your heart set on spending a chunk of money on this so just get an engineer to spec it .

 

[middleman]

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[Alastairreid]

Not arguing with what your builder proposes to do as he can see and and has a feel for the job where we only have a pic to go on.

I cant help thinking going by the pic, the fence and strip foundations are going to be sitting on the outer edge of the bank which appears to be held together by the roots from the vegetation.

What will stop the lot from slipping down the bank when it gets saturated?

Can you not erect the fence further back to more stable ground?

 

[freddiemercurystwin]

£650? Gonna be a good wall that!

 

[Norcon]

although it will not be retaining a great deal at 1.5m high

The image doesn't look 1.5m high.
I just see a block on its edge tipped over. Looks like a few row of dry stacked 6" would do with a whackered base.

1.5 m however is a different story.

had remained for at least 10 years prior to me digging and undermining it.

Aaah I see. So your digging has caused the single block to tip over. Thats what usually happens. Had it been a larger wall it might well have tipped over and killed you or someone else in your family.
Why not leave well enough alone?

 

[middleman]

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[r896neo]

Your builder has either massively underquoted (by a factor of 2/3 at least) or he is planning to just throw up a block wall and hope it stays there for a while.

What was there before can not be classed as a wall.

Whilst the wall may stay as one piece there is a very real possibilty that the massive weight of the whole thing will just land slip it down the hill.