Which type of foundation slab / construction method and what to pay attention to!?

Hello,

I have one or two questions about the topic of concrete slab for house construction.

We are now slowly entering the quotation phase and planning a single-family house without a basement. (in NRW)

I think it should be a conventional concrete slab (I simply have too little information about the Schwedenplatte).

No underfloor heating is to be installed.

However, I am reading about different options for the structure on this topic.

Therefore, my question here is what the optimal structure of a conventional concrete slab should look like.

Regarding insulation, for example, I have read that there is the possibility to place the insulation above as well as below the concrete slab (is this useful?)

Furthermore, I am wondering whether it is correct that simple KG pipes are no longer permitted and that a multi-utility connection for concrete slabs without a basement must be installed.

Is the bitumen membrane or Knauf Katja Sprint laid when the shell is already completely built, or is it applied earlier on the concrete slab?

As a layperson, I am trying to gather as much information as possible about the workflows in advance.

Thank you very much for your support.

Axel

Classically, foundation trenches are excavated in the planum and filled with concrete and iron. The walls will later stand on these strips. Now the entire planum surface is shuttered and covered with steel mesh mats. Concrete is poured on top, allowed to harden. Formwork boards are removed. Finished. Before pouring the concrete, however, the civil engineers have laid the inlets and outlets with KG pipes, which now protrude from the concrete. In SH, the multi-utility connection is not mandatory; for us, gas, electricity, water, and telecommunications come via conduit pipes or KG pipes to the utility room. The bricklayer then lays his bitumen sheet on the concrete as a moisture barrier and builds the wall on top. Once this is finished, he will cover the room surfaces with welding sheets and weld them with a gas burner. On this bitumen layer, electrical cables and water pipes are then laid. On top of that, thick EPS panels as insulation and, decoupled from the wall, the floating screed. On this, tiles or leveling compound and floor coverings. Ok? Karsten

Big thanks

With us, SH, multi-division was mandatory

With us, multiple trades are also mandatory.
What do you want to heat with if there is no underfloor heating?
Floor slabs can be made in different ways - none is necessarily better than the other, but it depends on the boundary conditions, including "house type," soil, topology, etc.
- as Karsten described, strip foundations and non-load-bearing slab with insulation above or below
- strips as frost skirt and load-bearing slab with insulation above or below
- bedding and load-bearing slab with insulation above or below
- exotics

the capillary-breaking layer, foil, and possibly insulation are missing A multi-utility line prevents the ingress of pressurized water. It makes no sense at all with a floor slab!!!!! However, there are now utility providers who demand it. Imagine it technically. The water is still 10 cm higher and it runs straight into the front door anyway.