Reinforcement / Armature visible

The reinforcement is vertical at this point because it was bent into a cage, or rather into a cage open to the inside of the house. Further inside, "snake" spacers must have been installed between the first and second layers.

As far as I can see, you do not have a strip foundation at all, but "only" a floor slab.

Since the floor slab is anything but straight on the sides, probably no formwork was built before pouring, hence the undefined distances between the reinforcement and the ground.

Also, no foil can be seen at the lower area on which the plastic spacers keep the reinforcement away from the ground.

Attached is an example (not finished yet).

I am dealing with firecrackers. It was done the same way with us. The floor slab itself partially rests on the frost skirt (or rather the subfloor insulation does). The clinker was then built with a gap on the frost skirt. In between, there is also perimiter insulation. The frost skirt is correspondingly little defined, but the floor slab is separate from it. Whether this is really the case with the OP will be revealed by the execution details – or the expert.

The expert should also take a precautionary look at the execution of the foundation earthing during THE execution ...

Interesting point.. I think it lies in the frost skirt all around and then runs into the base plate (?)

Interesting point.. I believe it runs once around the frost skirt and then goes into the base slab (?)

I have now seen it several times that the grounding conductor runs around the FS, as you write, and is then laid directly from the FS into the building in the area of the house entry. So not into the base slab and not through it either.

There are regulations for electricians when installing the foundation earth electrode.

For conventional concrete, a galvanized grounding tape, which must be connected to reinforcement and completely covered with concrete for corrosion reasons, is usually sufficient.

When using [WU-Beton] or full perimeter insulation, an additional stainless steel ring earth electrode (usually V4A wire 10mm diameter) must be installed under the slab for equipotential bonding.