Can you show the drawing (attachment?) once? I haven't quite understood the 0.8 sqm yet. That's a tiny area compared to the exterior wall. Or am I missing something?
Sure.
What about the diameter of the pipes in the sanitary area? Weren't they too small?
The expert says, from his point of view, everything fits. To be on the safe side, he wants to have the drinking water pipe network calculation. Let's see if I get it soon. Sometimes they don't want to release documents, and it only happens after multiple requests. The architect, who is no longer employed there, told me he once got really into trouble when he sent me a heating load calculation. I don't understand, if you work cleanly, why you have to keep such secrecy.