Toilet on shower wall

Hello :-)

Can someone tell me what thickness the wall of a half-height (approx. 1.20m) shower wall must have in order to install a toilet on the other side?

Or are there cisterns that can be integrated into a 17.5 cm wall?
This concerns a masonry wall, NOT a drywall.

Thanks in advance :)

A standard pre-wall element has a depth of about 12cm. On top of that, a gypsum board or similar is needed to be able to cover the whole thing with tiles. For a masonry wall, you would need a corresponding recess in which you can embed your [VWE]. Then the part still needs to be properly anchored, and with the theoretically remaining few centimeters of wall thickness, this will probably be problematic.

what thickness the wall of a half-height (approx. 1.20m) shower wall must have in order to install a toilet on the other side? [...] This concerns a masonry wall, NOT a drywall.

I usually don’t lack imagination, but here I completely lack the visual conception of the project:

Most people shower standing up. Even pygmies are 1.40 m tall as adults. So whose shower should be separated splash-proof by a 1.20 m high wall (?)

The purpose of a toilet is to lead the subject of the successful completion to a drain. This usually leads out at the bottom on the rear side (i.e. the wall side) of the toilet – so on the other side of the shower wall here: into the shower ? ? ? ? ?

The question why you do not intend to use an installation wall element here seems to me – given this spatial oddity – uh, let’s say: "secondary."

I hope that I am the one with the kink in spatial imagination of us two in this case, but I am very curious to hear the explanation ...