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I would like to attach the plan with the bathroom furniture, but you can't see it because I can't make the ceiling transparent.
Go ahead please. I don't see any possibilities if everything is to be built according to DIN.
I have attached the alternative again.
But it doesn't have west-facing windows for light yield and the evening sun in summer.
Load-bearing interior walls: 17.5 cm
Others interior walls: 11.5 cm
If you are planning for yourself as a layperson, you should take about 36 cm for the exterior walls, 20 cm for the load-bearing ones, and 14 cm for the other interior walls. That would be a rough estimate of wall thickness including plaster.
But honestly...
The kitchen was actually a "first shot".
Okay... to be honest, I haven't really thought much about that yet.
...but I have absolutely no idea how to plan it differently.
I'm not really into the "where does the sun rise" thing, ashes on my head ops: ic
I have absolutely no idea here yet, which is why I haven't drawn anything in.
...are you sure you are not overestimating your abilities a bit? What about your planner?
If you do something yourself, you should have basic knowledge and be able to apply it. You haven't thought about many things yet... that can certainly backfire - even if it only means a long time delay including a second building permit.