ᐅ Exterior Wall Construction KfW 40, Wall Thickness 49 cm

Wall construction for KfW 40 floor plan 49 cm (19 inches)? How would you have done it?
Hello, our energy consultant keeps telling us that the plaster (2.00 cm (0.8 inches)) is included in the mason’s wall thickness dimension (according to the floor plan 49 cm (19 inches))?

Lena.Akkermann schrieb:

Wall construction for KFW 40 floor plan 49 cm (19 inches)? How would you have done it?
Hello, our energy consultant keeps telling us that the plaster (2.00 cm (0.8 inch)) is included in the mason’s wall construction measurement (according to the floor plan, 49 cm (19 inches))?

What exactly is your question or issue?

nordanney schrieb:

What exactly is your question or what problem are you facing?

Is the plaster layer on the inside included in the 49 cm (19 inches) masonry wall thickness? Actually, it is not, right?

Lena.Akkermann schrieb:

Is the interior plaster layer included in the 49 mason thickness of the wall?
Actually not, right?

Yes, the construction drawings show the raw structural dimensions without plaster. Your energy consultant is absolutely correct with their statement.

nordanney schrieb:

Yes, the construction drawings show the raw structural dimensions without plaster. Your energy consultant is absolutely correct in his statement.

Because the exterior wall system would be
17.5cm (7 inches) aerated concrete, 10cm (4 inches) and 8cm (3 inches) insulation, 2cm (1 inch) air gap, and 11.5cm (4.5 inches) brick facing, which would total 51cm (20 inches), but the architect said that doesn’t fit because the drawing shows 49cm (19 inches). He said we would have to adjust the entire floor plan’s exterior walls to 51cm (20 inches).
We definitely won’t do that.

17.5 + 10 + 8 + 2 + 11.5 = 49

You clearly explain how the 49cm (19 inches) is calculated, and nowhere in the list is plaster mentioned. I also don’t understand the question: Does the architect say that fixed interior dimensions are required and that’s why all walls should be moved outward? Or why not just build exactly like that, then apply the plaster on the inside, and avoid confusing calculations?

It seems this topic is quite emotional. Maybe when you have a quiet moment, you could take some time to describe the problem in more detail?