Floor plan planning shortly before submitting the building application

I didn’t understand either what the pipe is supposed to be for. Below it is the guest bathroom. Above it is the roof. It’s a mystery to me.

Yes, I also think that you have to make such a casing in the dimensions of the bed. I believe that can be solved.

Yes, I also think that such a casing has to be made in the dimensions of the bed. I believe that can be solved.

Before the screed layers, otherwise it will be a hassle again. And with clear height specifications "before or after Christ"

Good that you say that. They told me that the drywall installer only comes after the screed is laid to discuss and decide such things with us. How can I argue to them that I want to have it beforehand?

I think there should be an insulation strip around it like with masonry walls, I wouldn't want it standing on the screed. Don't forget sound insulation, otherwise it will become a top-class resonator.

I didn't understand either what the pipe is supposed to be for. The guest WC is below it. The roof is above. It's a mystery to me.

Ventilation stack above the roof (for drain pipes). Otherwise, the stack would be a "pipette" – if closed at the top, nothing flows out at the bottom...

yes that will be a ventilation