Lightweight concrete with filling? The agony of choice in masonry

and are currently in the discovery phase regarding Stein.

I counter that with a passionately shouted "never" when I think of your main thread.

Wood perforated bricks portion, with which it is possible to build monolithically and have thermal insulation and sound protection.

Critical with the holes, but it works, you just have to use the right dowels.

Aerated concrete W PP 2-0.35 (lambda 0.08) at 365mm weighs 128kg/m² Poroton T8 unfilled at 365mm weighs 219kg/m² Sand-lime brick RDK 1.8 175mm weighs 315kg/m² Just to see the relation.

If soundproofing is the determining factor for you, you either have to build double-shell with sand-lime brick or sand-lime brick + ETICS. Monolithic construction does not provide good sound insulation at normal wall thickness.

The question is whether you actually need "good" soundproofing. Airport or railway tracks nearby?

The house is located in a zone 30 area – traffic is moderate during the day. At night there is hardly any traffic (residents only). We have no airport or railway tracks nearby.

To this I would vehemently counter with a "never," when I think about your main thread.

Apparently, our orientation has not been liked, okay. I can understand that, but it is what WE want.
What is technically bothering you about the design? Please justify factually.

The Liapor/Liaplan of our choice has the following technical data:

Strength class 2
Bulk density 500kg/m³
Lambda 0.08
U-value 0.20
Rw Building 50 dB

We are in seismic zone 0.
To me, the stone reads absolutely great, without real disadvantages.

Maybe I have overlooked something...

Regards
Kevin

Maybe I also overlooked something …

Yes. The weak point in "soundproofing" against the outside is always the windows, not the wall shells or their stones....

What exactly is technically wrong with the design? Please give a factual reason.

That is what I and others have done, for twelve pages.

Maybe I missed something ...

No, you just don’t want to listen.

Between the front door / garage door on one side and the rear garage door / terrace on the other, the terrain rises by about 140 to 150 cm. Assuming a level garage floor, at the rear garage door the earth will be up to your chin. You can never ever dig all that away without your neighbor’s rainwater flowing into your yard.

You simply lack the imagination for the unfeasibility of your building plan. But I had already pointed out that the height figures are not just some numbers randomly scribbled onto the cadastral map.

Presumably, you have the naive idea of a retaining wall placed like a guillotine in front of your neighbor’s earth masses at your boundary. But in that case, its stabilization against the earth pressure would be on his side :-(

Take another look at your main thread – you will see that it is not just my personal opinion that it doesn’t fit like that and can’t be changed that way.