Is the base plate properly sized?

Hello everyone,

I wish you a Merry Christmas and have a question right away.

We started building this month. It will be a detached house with a slab foundation and a garage, which we are having built by a local general contractor.

The slab was poured on Thursday, and we looked at it today.

I wonder if there was a mistake, as I interpret the plans differently.

Maybe I am completely wrong with my lay observations, and I will speak to the general contractor in the new year. But right now I am pondering, and maybe you can immediately dispel my concerns.

It is about the following:
Our solidly built brick house is constructed with a double-shell method and plastered on the outside (wall assembly from inside to outside: 17.5 cm Poroton, 18 cm mineral wool, 11.5 cm Poroton). The garage is recessed by 25 cm facing the street.
Now the slab of the garage is slightly further forward than that of the house. To me, it looks as if the slab is aligned with the course of the load-bearing walls. That would theoretically fit, but the facing wall must also be built on the slab and cannot be “hanging in the air”?!

Am I overlooking something here?

I have attached a drawing and a photo of the execution.
I am very curious about your assessment.

By the way, our general contractor is the structural builder and creator of the slab.

Thank you ✌️

Is the drawing part of the execution plans or just some sketch? I also see it like you so far, that either the recess is missing here or the wrong material is planned. In any case, I would inquire.

That would only be possible if the outer shell is not supposed to rest on this slab. The drainage pipe in the slab could be an indication of that.

How did you come to this rather unusual wall construction?

Is the drawing part of the execution plans or just some sketch? So far, I see it the same way as you, that either the setback is missing here or the wrong material is planned. In any case, I would ask.

This is the official floor plan on which the implementation is planned. So the result should definitely fit. I will definitely ask, let's see. Thank you for your assessment.

That would probably only work if the outer shell is not supposed to rest on this slab. The drainage pipe in the slab could be an indication of that.

How did you come to this rather unusual wall structure?

What exactly do you mean by the drainage pipe? Is there even a possibility to build the outer shell without it resting on the floor slab?

Why this wall structure: a plaster facade is required in the development plan. We didn’t want ETICS with Styrodur, and the two-shell method was cheaper than going with ETICS with mineral wool.

The Poroton brick is placed on the outer edge of the floor slab. Insulation and the pre-wall brick are only applied to the foundation. So in principle, this is correct. I just wonder how the garage will be clad from the outside? Just plaster on the Poroton wall?