Are these interior walls load-bearing?

[Fredrik-]

The sketch is for the lower floor (floor 3 in the house) of the apartment which was built in 1958.
The concrete floor to the upper floor (floor 4) is 270mm when I measure in the stairs.
Unclear how thick the "Outer walls" towards the neighboring apartments are but they feel "solid."

All interior walls (the arrows) are lightweight concrete, "blue-purple core is 70mm and then the plaster varies between 5-20mm between different walls.

I wish to demolish the walls with the green arrow.
Do you see any risk that these are load-bearing?

The images correspond to the blue part in the drawing which "originally" was an opening.

 

[Luddis_1]

Pause the demolition/construction and check with the association before you proceed.

 

[Fredrik-]

I have asked if they know whether it is load-bearing, which they did not know.
Otherwise, there were no comments on removing a wall.

Is there anything else specific beyond that which I should check with them?

 

[Luddis_1]

Request written approval from the board before you demolish any wall.
After that, you can proceed to find a structural engineer who can calculate if/how your interventions are feasible.

Good luck!

 

[Dowser4711]

Looks like you have a ventilation duct at the top of one of the walls, which could also affect what you can do.
How is the electrical wiring done in that wall?
Can you get a construction drawing from the board?

 

[Fredrik-]

The channel is water and electricity to an upstairs bathroom. A couple of centimeters in from the door frame (directly under the channel) goes electricity/pipes to a switch visible in one of the pictures. There is also a switch in the living room, next to the one visible in the picture.

Electricity can be moved, but given the water to the upstairs, the idea is to build these into a pillar if so. Will look for a construction blueprint, but doubt there is anything like that left.

 

[Leif i Skåne]

7 cm blåbetong is not load-bearing!
If you knock on the wall, there's a significant difference in sound between load-bearing and non-load-bearing walls. Load-bearing walls sound solid.

 

[Fredrik-]

7 cm blåbetong is not load-bearing!
If you knock on the wall, there is a big difference between load-bearing and non-load-bearing walls. Load-bearing ones are solid.

Yes, that's what I think as well, and there's also a difference in what it has to support. But with my conditions where the weight on the upper floor slab (27 cm concrete) is considered, these 7 cm walls would collapse if you sneeze on them.

I'll focus on getting an approval from the board.