Are corner stones also considered dry walls?

Hello dear forum community,

we need to construct two retaining walls each 80 cm high to support our two parking spaces at the neighbor’s boundary. The development plan stipulates that retaining walls are only allowed up to a maximum height of 80 cm and must be "dry walls" (without material bonding). I have already found out that dry walls do not necessarily have to be made of natural stones; the main point is that the stones are neither glued nor mortared together. In addition, the estimate from our architect is only about one-third of the price quoted by garden and landscaping services. Unfortunately, my better half considers support with planting stones, which one can also make oneself, to be insufficient for the load of two cars.

Now I wonder whether the use of angle stones is possible, or whether this would also be considered a dry wall in practice, since the individual stones are also not glued or mortared, and a dry wall can also consist of concrete blocks.

So far, I have not wanted to ask the municipality, so as not to risk being required by them to use natural stones.

Thank you all very much in advance for your assessments.

Hello

I think 80cm as a dry stone wall in the classical sense is quite ambitious. Or rather nonsense. The stones of a dry stone wall are just wedged together. How thick should it be to absorb the earth pressure from 80cm? I would use L-stones there. Properly set in concrete. Possibly tiled with natural stone slabs on the neighbor's side. Everyone should be happy with that.
Consider whether you want to do it that way, and if maybe some nagging from the building authority comes, you can argue well.

Steven

An 80 cm high dry stone wall is no problem. It can also be much higher. We support 100 cm with it, our neighbor, for example, has a 160 cm high heavy-duty dry stone wall made of large-format sandstones. It is very common with us. The soil pressure with light walls is compensated by the inclination, that already works.

Angle supports are of course not dry stone walls. If dry stone walls are specified in the development plan, then that was done precisely to prevent concrete angle supports.

Addition: "No problem" of course only means that it is technically possible. Constructing a proper dry stone wall is quite demanding in terms of craftsmanship, especially with natural stone.

Such a wall would be possible. but it costs money: 4000,- gross here. Karsten

Such a wall would be possible.

Is that actually your parking bay?