Calculate which beam I need

[emjoma]

Hello,

I will remove a wall (not a load-bearing wall) but a supporting wall. The beam that will be needed is 4.0 meters. The trick is that it's a concrete slab, which I understand is very heavy. How do I determine which beam I need?
I have previously been told that an HEA160 should work, but that was when the person who calculated it thought it was a wooden joist...

 

[Mats-S]

The crux is that it is a concrete slab

This is not something you can guess on, you need to hire someone who can make a correct calculation on how to replace the load-bearing wall with a beam. It's not just the beam that needs to be calculated, you also need to have an understanding of the load below where the beam rests. Also, be aware of the concrete slab and how it is constructed.
You also need to know how the job itself should be performed, because when you remove the wall, you need to have some kind of temporary support for the concrete slab until you have installed the permanent beam. And the temporary support must stand on a stable surface.

This is a job for professionals who can take responsibility for the construction they suggest 🤔

 

[AG A]

This is not something you can take a chance on, you must hire someone who can make a correct calculation on how to replace the load-bearing wall with a beam. It's not just the beam that needs to be calculated, you also need to keep track of the load down where the beam rests. Also, keep track of the concrete slab and how it is constructed.
You also need to know how the job should be performed, because when you tear down the wall, you need some kind of temporary support for the concrete slab until you have installed the permanent beam. And the temporary support must stand on a stable surface.

This is a job for professionals who can stand for the construction they suggest 🤔

I am a qualified structural engineer. Exactly what you need to hire. Despite my knowledge, I don't even have half of the prerequisites to give you a correct answer. There are too many unknown parameters. As mentioned, it's not just the beam that needs to be calculated either.
I hope you find someone who can come and take a look and help you.