5-6 cm wide static concrete wall in the outdoor area

Hello,

I’m not a structural engineer, but would something like this hold? The neighbor’s gardener is planning something like corrosion protection from 4-6 cm as shown in the picture.

The top of the wall tilts about 10-15 cm onto my property. On the other side, about 160 cm of wall + soil has been piled up. The wall is about 15 cm wide and the angle in the soil is about 1 m wide. The green area is my soil surface. The wall stands almost flush with my sod or whatever it’s called again). The wall has no foundation. Now, a concrete wall about 4-6 cm wide and max 60 cm deep is supposed to be poured into the wall so that the wall holds?

I see it like this: the 60 cm depth + 5-6 cm will not hold the right angle. If it is raised straight up, then the wall will eventually break off, because the concrete cannot properly bond with the old wall. Do I have a misconception here?

I had to read it twice now but still haven't understood?!

You have terrain 1.6m high and the neighbor installed an angle stone at this level, which is leaning towards your property side? Now they want to underpin this "misalignment" with in-situ concrete? Is that correct?

I cannot fully understand it either. A retaining wall that leans forward is always bad. Filling the gap with concrete doesn’t help either. It is also unclear to me how angle supports lean forward; rather, they should push forward. The earth pressure on the lower leg largely prevents this leg from being lifted.

Botch with botch to fix..

Concrete without reinforcement holds nothing

I had to read it twice now but still don't understand?! You have 1.6m high terrain and the neighbor has installed an angle stone at that level, which is tilted towards your property side? Now they want to underpin this "misalignment" with in-situ concrete? Is that correct?

I am the neighbor whose property is the green one and the one affected by the L-angle. I only get this information bit by bit or very superficially. To me, it sounds as if the red wall (5-6 cm wide) is supposed to be set not underneath but in front of it. Because if I were to do it that way, the angles would have to be supported so that they don't fall. Whether that is cheaper than installing new angles is very questionable.

I can't quite understand it either. A retaining wall that leans forward is always bad. Filling the gap with concrete doesn't help either. It's also unclear to me how angle supports lean forward; rather, they should be pushed forward. The earth pressure on the lower leg largely prevents this leg from lifting.

I totally agree with you, but what am I supposed to do as the injured party. I can only rely on a straight wall that doesn't topple over and hopefully is properly braced. As far as I know, the wall has no foundation and was originally placed on backfilled, presumably uncompacted soil. (pusch)