Requirements of the foundation slab experiences?

Hello,

we want to build a 1.5-story house of about 133 sqm without a basement, approximately 9 *10m.

While reading the construction service description (excerpt see below) the floor slab seemed very thin to me, since with other providers the floor slab is up to 25cm thick.

Is the floor slab as described sufficient?

Excerpt from the construction service description:

"Earthworks:
The topsoil will be removed up to a thickness of 30cm, the excavated soil remains on the property. The missing height will be replaced with frost-resistant material. According to geotechnical requirements, the foundation cushion will be increased up to 45 cm. On the frost-resistant material, a plastic sheet will be laid as a separating layer. The empty pipes for media supply to the house connection room will be routed in the shortest way up to 50cm before the house outer edge.

Floor slab:
The floor slab will be executed according to the drawing (16cm) made of steel fiber concrete with concrete quality C25/30. A grounding strip made of galvanized strip steel will be installed. On top of the floor slab, an additional protection against ground moisture will be applied.

Floor:
The floor in inhabited rooms is constructed as a floating screed with edge strips on thermal and impact sound insulation. The build-up is as follows:
Ground floor:
approx. 85mm insulation (PS rigid foam, WLG 035)
PE foil
approx. 45mm cement screed
If higher requirements for impact sound insulation according to DIN apply, this will be adjusted."

Thank you very much for your help!

The construction performance description states what is included in the price. The thickness of the floor slab and the corresponding excavation are calculated based on the soil survey report, so it may be or is very likely that additional costs will arise for you. 16cm reads very thin to a layperson like me.

(16cm) made of steel fiber reinforced concrete in concrete grade C25/30

.. steel fiber reinforced concrete at 16 cm thickness is also problematic, since only steel fibers are used and no steel mesh ... that is a difference ...

Floor: Ground floor: approx. 85mm thermal insulation (PS rigid foam, WLG 035) PE foil approx. 45mm cement screed

.. the ratio is also problematic .. > 85/45 and then without reinforcement .... the screed will certainly crack and/or settle later ....

Hello, I only know such slabs in combination with strip foundations. The loads from the walls are transferred directly into the ground through these. The floor slab is basically non-load-bearing and structurally reinforced with steel fibers. Regards Ronny