Actually, I haven’t found a good example on the internet so far for the dimensions of such wall cabinets. I always only find floor plans without measurements.
You can find plenty of examples with real estate agents who offer houses in the USA. You will notice that the floor plans and dimensions on the East Coast are different from those in the South or on the West Coast. Most American houses are built as wooden frame structures on a concrete slab. The walls are unusually thin for Europeans. The size of the walk-in closets varies from "Pax in the wall" to "Wow, a hall for stuff." In architecture, these closets are often integrated in such a way that they increase the distance between rooms. One compartment leads to one room, another to the other. This can somewhat reduce the structural sound transmission.
In the living room, I would like to have a piano behind the sofa on the empty wall.
I kind of thought that. A piano fits perfectly there.
We just rarely sit at the dining table. Every few months there’s a big game night with friends. But otherwise, the table is very underused. I don’t find the solution with the bench perfect either, but if it’s free-standing, it’s actually a bit too tight for me near the staircase.
If that’s the case, the location is probably okay. The bench is not the challenge for me – it’s even particularly popular here – having the staircase and the head side of a wall at your back just prevents a feeling of well-being.
The column is actually only optional. The architect said it might be necessary to install one and had penciled it in there. But whether and exactly where, a structural engineer will have to decide later.
It works without it as well. But that means higher structural material use and costs money. In our case, the rafters were made several times thicker and higher because I resisted a central purlin. I know quite well which things in our house cost extra money and where we were economical. Demands on structural engineering cost.