42.5 cm aerated concrete and 400 cm wide windows and venetian blinds

we hopefully want to start our single-family house construction project this year. We are building single-story and I would like to build monolithically with 42.5 cm aerated concrete, so without additional thermal insulation. [...] 42.5 cm thick wall, two 400 cm x 250 cm fixed-glass windows will be installed. Directly above the window, for example, prefabricated insulated roller shutter boxes can be installed. These are (if I understand correctly) exactly 42.5 cm deep and insulated. The maximum width of up to 5000 mm seems to fit - does anyone know if they really deliver custom-sized at 400 cm length, or if we are talking about 2 x 200 cm here?

If it is not to remain just the hope for a soon start of the project, then you should stop asking a lot of isolated general building material questions in a forum where you can draw on extensive expertise, despite the fact that you apparently already have detailed ideas about your future home except for individual window openings. Present your project once – very gladly as a napkin sketch without fiddling with planning software – then you will get great help (a friendly tone assumed, of course). No one here wants anything from you except to help.

Regarding wind, I have no concerns – we are building on a plot in the second row, surrounded by a forest property and residential development – so it is windless.

That sounds interesting, you have a worthwhile thread to offer that will also be well attended.

...and basically just want to clarify whether the considerations regarding the roller shutter box, ring beam, and reinforcing mesh are correct - "can you do it like this? Am I overlooking something?"

If you were to get a truly binding answer for this very specific detailed question here in the forum, I would be surprised. Who here should know that and at the same time call your expert, who apparently wants to carry it out with warranty, ignorant?

Taste is a matter of opinion - but you can also leave it at that.

If you understand "arguing" in the true sense, it can even be nice and constructive. I am sure that many here in the forum would criticize my build and I listened to and considered everything back then. I was grateful for the openness and in the end, I can still do what I want, so I can only benefit from critics. I can well imagine living in such a "glass bungalow." With several years of living experience, however, I would also know that I would have to pay closer attention to some contexts so that the great impression doesn’t crumble beneath my feet because I simply overlooked other convincing things.

Well, from a certain point on it’s just physics. Even a quadruple glazing does not remotely have the same U-value as a 42.5 cm aerated concrete wall or one made of brick + ETICS. If my main living area walls now consist of 60% windows, the adjustment options are fairly small.

Well, if everything is that simple with the "just physics," then let’s get started. I haven’t built my first project, but I still keep being surprised by such statements. Structural engineering is also "just" physics like probably almost all segments in construction, so what are you trying to tell me with your statement "just physics"?
It is already known that "insulation values" do not scale linearly with increased thickness, as anyone who wears more than three pairs of socks in winter knows. At some point, it just doesn’t help anymore. But it certainly can't hurt here either, if you already have an energy consultant, to ask exactly this "expert" and trust him with the knowledge gained (if you have chosen the "right one").

If you are of course referring to requirements, you may be right. In my opinion, that is also just a farce. Currently, I don’t see that we need or would receive any funding.

I am not referring to that at all, but merely asking this undoubtedly justified question for understanding. Are you rather of the suspicious kind, or is this again "just physics"? Whether you see the current funding options as a farce is your personal opinion and thus okay but ultimately irrelevant, whereas your insulation values are not.

Regarding wind, I have no concerns - we are building on a plot in the second row, surrounded by a forest plot and residential buildings - it is wind-free there.

Wind was only a hint from my side about possible noise (like with us). From the "just physics" standpoint, it is known that a whole range of relevant issues can arise in residential construction, especially with the building material glass.
I just realize that I answered your first post completely politely and now feel grumbled at by you and even called a "first-time mother" (quote).
How did my buddy say back in 1975 in front of the cinema when they didn’t want to let him into the film classic "Yodeling under the dirndl"?
"Well, okay, then I’ll just go home and watch Bonanza." That’s probably what I’ll do now as well.

Since an 11ant and Chuck Norris also respond to missing posts: I find the Halbatrium comparatively too narrow and would therefore move the orange marked area to the right according to the plan. What do the dashed lines actually mean (with a single floor it can’t be anything else)?

That "insulation values" do not increase linearly with an increase in thickness is something you already know if you wear more than 3 pairs of socks in winter. At some point, it just doesn't help anymore.

Regardless of the rest, this is not necessarily correct - the U-value of a wall with insulation changes almost linearly with the corresponding thickness of the insulation layer.

That is to say, a wall made of 300 mm concrete + EPS 032 insulation, with a "thickness" of 1 mm has a calculated U-value of 2.847 W/(m²K), with an insulation thickness of 100 mm a U-value of 0.29 W/(m²K), and with an insulation thickness of 1000 mm a U-value of 0.032 W/(m²K).

Specifically for insulation, the principle "more helps more" works almost perfectly. Common insulation thicknesses result more from practical reasons (cost/benefit, total wall thickness, technical limits in insulation production, problems/effort with multilayer application, etc.).

Are you more of the suspicious type

I just realized that I responded completely friendly to your first post and now I feel like you are grumbling at me

The distrust towards the expert and the implementation of his venetian blind at 4 meters is probably equal to the understanding of the answers.

The OP is now only a guest and deactivated.