Open up between kitchen/living room

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Hello

I have a 1.5-story house (from 2001, Halland) where I want to open up between the kitchen and living room, about 3.9m.
The house has a crawl space, resting on 4 concrete beams.
As you can see, the kitchen on the right is slightly wider than the living room.
The central wall is not centered over the concrete beams, about a 70/30 ratio.

Is it possible to drill two holes through the entire floor down to the ground, clay soil?
Can two foundations be cast in the ground there and have two posts (steel beam?) with a steel beam on top?
So not using the current concrete beams (crawl space) as support.

Dimensions for the beams? vertical?, horizontal?
Material? HEB, HEM, IPE ??

The roof trusses rest on the central wall, have been informed of a pressure of about 30kN.
Attaching a picture of the house/foundation.

I'm not a constructor, would this work considering the upper floor and the roof trusses?

Thanks in advance.

 

[BirgitS]

As you can see from your drawing, the concrete beams go deep into the ground, probably down to solid bedrock, because clay is a poor foundation that shifts (compare landslides). This applies even if you are now going to introduce other load points.

Consult a structural engineer who can try to come up with a solution and provide you with enough documentation for the building notification that is usually needed when intervening in a load-bearing structure.

 

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As you can see in your drawing, the concrete beams go deep into the ground, probably all the way down to solid bedrock, because clay is a poor foundation that shifts (cf. landslides). This is the case even if you are now going to introduce other load points.

Bring in a structural engineer who can try to come up with a solution and provide you with enough documentation for the building notification that is usually required for interventions in load-bearing structures.

Thank you for that answer.