Renovation of an old building, floor plan layout, experiences

Ok, I will pack everything in tonight. The wall in the guest WC that leads to the other hallway with the stairs

The wall in the guest WC that leads to the other hallway with the stairs

The walls between 1 and 2 and between 1 and 4 are 7 cm thick, presumably made of NF bricks placed on their side, and are probably neither load-bearing nor bracing. They may contain reinforcements, but only for themselves.

The walls between 1 and 2 and between 1 and 4 are 7 cm thick, probably made of NF bricks laid on their side, and are probably neither load-bearing nor bracing. They may contain reinforcements, but only for themselves.

It's good to know, interesting that the structural engineer says otherwise, but also regarding the wall in the kitchen. He said that one is definitely load-bearing; I haven't heard anything about it being non-load-bearing. I'll also upload the structural analysis for the ground floor, as I have all of those. The house was originally built by an architect, and I have access to all the documents.

but also at the wall in the kitchen.

I was also surprised by that: those are 11.5 and then a serving hatch?! Until now, I didn’t know that 11.5 could be load-bearing.

I am much more excited about the plot, building envelope (it's best to use a large-scale cadastral extract), and sections. Which ones do you mean?

Once the orientations and also the floor plan of the basement again.

It's good to know, interesting that the structural engineer claims otherwise, but also regarding the wall in the kitchen. He said it would definitely be load-bearing, I haven't heard anything about it being extensive.

It is also called stiffening.

I’ll also post the structural analysis for the ground floor since I have all of them. The house was originally built by an architect and I have access to all the documents.

Presumably, the structural engineer read a reference to reinforcement and concluded from that that it bears load (and/or stiffens), which in my opinion is incorrect here.

That surprised me too: these are 11.5 and then a pass-through?! Until now, I didn’t know that 11.5 could be load-bearing.

Rare, but not impossible, and there would be no objection to pass-throughs in load-bearing and/or stiffening walls. As I said, I consider the kitchen wall to be stiffening, though not at the same time load-bearing.