Anchoring of fence/trellis in retaining wall

[vr12]

Hello,

I am planning to build a fence along the property line in the spring and am currently preparing to submit the building permit application. However, I have some questions about how the fence should be anchored in the ground.

The fence is to be built at the property line. Our property is about 3-4 dm lower than the neighboring property. To counter this height difference, we plan to build a retaining wall with masonry blocks at a height of 3 courses visible and 1 course below ground level. The masonry blocks will be bonded with stone adhesive. On our side, paving stones will be laid closest to the retaining wall, while the other side will have vegetation.

The nicest and perhaps simplest solution would be to attach post shoes for the fence in the middle of the wall so the fence stands on the retaining wall. However, I am concerned whether this will hold in the long term. If using concrete plinth or ground screws, which side of the wall should they be mounted on?

The ground conditions are sandy. The fence will not be solid but more like a trellis with fence slats with equal spacing between the slats as the width of the slat. The fence will be about 150 cm high on the wall and 15 meters long.

Feel free to share thoughts and ideas on how the anchoring should be done.

 

[Testarn]

Attaching post shoes to a wall that is "only" glued with stone adhesive does not feel secure. If it were my retaining wall and board/fence, I would have poured a bottom and pillars at regular intervals and then placed the fence posts in these pillars and built the retaining wall between them.
This way, you get strong and durable post mounts for the fence and a wall that holds.

If you want to place the posts next to the wall, it will be easier to maintain if they are on your side of the wall but look better if they are on the other side.

 

[vr12]

Attaching post shoes to a wall that is "just" glued with stone glue doesn't feel safe. If it were my retaining wall and plank/fence, I would have cast a base and pillars at regular intervals and then placed the fence posts in these pillars and built the retaining wall between them.
That way, you get strong and durable post mounts for the fence and a wall that holds.

If you want to place the posts next to the wall, it will be easier to maintain if they are on your side of the wall but look nicer if they're on the other side.

Thanks for the tips!
Fastening to a plank seems a bit complicated.

Do standard prefab concrete plinths of 700 mm usually suffice for a plank?

Maybe I could skip the retaining wall and just go with a plank, letting the difference in ground level be supported against, for example, formplyfa behind the plank.

 

[z_bumbi]

You are essentially building a trellis so wind impact is lower than a fence.

Some wall systems have either special stones or are hollow so you can cast with concrete (with reinforcement bars) and attach plinth iron.

Formplyfa is not suitable as a retaining wall.

 

[vr12]

You're basically building a trellis so wind impact will be lower than a fence.

Some wall systems have either special stones or are hollow so you can pour concrete (with reinforcing steel) and attach plinth iron.

Formplyfa doesn't hold as a retaining wall.

Thanks for the tip.
Starting to lean towards finding some wall stones that can be cast in.
How deep below ground level do you think the wall needs to be anchored?

Agree about the wind impact.

 

[Testarn]

Thanks for the tip.
I'm starting to lean towards finding some masonry stones that can be cast.
How deep below ground level do you think the wall needs to be anchored?

I agree about wind impact.

It depends on the height and material behind, if you can anchor in the slope, which stone and mortaring you choose.
Check what the manufacturer says about that particular stone.