ᐅ Soil bearing capacity and modulus of subgrade reaction

Hello.
I had a soil report prepared. It states:

"To accommodate settlements / differential settlements of up to 1.5 cm (0.6 inches), a design value for the bearing pressure (Eurocode 7) of 200 kN/m² (18.6 kips/ft²) can be assumed for an effective foundation width of 1.0 m (3.3 ft).
The foundation slab should be designed based on an elastic subgrade. For the design of the foundation slab using a design bearing pressure of 140 kN/m² (13.0 kips/ft²), a subgrade modulus of 9.5 MN/m³ (0.55 kip/in³) should be applied."

In my construction contract, the clause reads:
"The calculation basis is a permissible existing soil pressure of 150 kN/m² (14.0 kips/ft²) and a subgrade modulus of 20 MN/m³ (1.15 kip/in³)."

What does this mean for me?

Hmm.... can no one help me here?

We are not your general contractor. They, or possibly their structural engineer or a similar professional, should be able to tell you how much it might cost.

Hello Saruss.
The issue is not initially about whether it will be expensive or how costly it will be.
It is about what this exactly means.
Do I have a ground that is too "soft"?
Does a ground replacement need to be carried out? And so on.

See my answer. The structural engineer or contractor will be able to tell you what "requirements" your desired house has in the chosen location and what needs to be done. The two values alone do not provide any information about all the accompanying factors (house requirements / seismic zone, etc.). Just because the costs for a certain specification are fixed in the description does not mean that the house actually needs them. It only means that the contractor may charge an additional fee in case of deviations (in a negative direction). The soil bearing capacity is somewhat lower.

hmm.... I signed the construction contract today...... and the seller couldn’t tell me anything about the soil report. I was told to wait until the site manager/structural engineer reviews it...
I don’t have a good feeling about this