Load-bearing wall - How do I find out?

[Tjolahoppan]

Hi!
I'm planning to remove a wall but unfortunately, I don't know if it's load-bearing or not. I will contact a carpenter to get the job done, but I'd like to have some insight first to make sure it goes right. So what do you think - is the wall load-bearing, certainly not load-bearing, or what needs to be checked to come to a conclusion?

The house is a modular house (Sidensjöhus) from the late '70s - a single-story split-level house. So from the "bottom up": split-level floor/basement, upper floor (where the wall in question is), and then an unfinished attic. So there is no floor above the wall that is to be removed, only the attic.

The wall in question is the one between the kitchen and living room (marked in red), the yellow-marked part is a chimney so that section of the wall will remain. It is 3 meters of wall to be removed and about 65 cm will remain. The blue lines show the different modules.



The wall is about 10 cm thick, so it shouldn't be a "real" load-bearing wall but rather a heart wall (?) given the placement.

In the adjacent module, with the hallway/living room, the short walls in the middle of the house are 60 cm and 100 cm respectively if that's relevant.

Attached are pictures of the attic, and what is stated about load-bearing walls + roof trusses in the building permit documents;

 

[Appendix]

Bearing. Use a beam for support if you are going to remove

 

[egge80]

Truss roof trusses thus non-load-bearing walls, however stabilizing.
Place a beam on the trusses to avoid any potential sagging!
Note, these are my guesses, consult a structural engineer if you are going to carry it out.