Hello! I assume questions about load-bearing walls are recurring here on the forum and not always easy to give straight answers to. But I'll try!

There is a wall that needs to be torn down in an almost square functionalist house (8*9 m) built in 1933.

Attached is a measurement from 1967 and a picture of the wall.
The wall we want to remove is marked in red. The wall marked in green has already been opened but it has been reinforced with a beam in the ceiling, which in turn rests on a standing beam next to the chimney stack.
This leads me to believe that it is the green-marked wall that is load-bearing.
All floors on the upper level are aligned with the red-marked wall, which should then be nailed into ceiling joists that run parallel to the red-marked wall. Can one then conclude that these ceiling joists rest on the cross wall?

What makes me doubt is that the wall is constructed of very thick materials, well too thick to not be load-bearing, or?!

Grateful for answers!!!



Floor plan of a 1933 functionalist house; red line indicates a wall to be removed, green line marks an already opened wall, 1967 measurements shown.

Wooden wall section showing thick beams on parquet floor, potentially load-bearing, in a 1933 house renovation project.
 
An open partition wall revealing its wooden frame, located in a room with a wooden floor, chairs, and a children's push toy in the background.
 
If the drawing is correct, it is highly likely that it is not load-bearing, as there is no support under it in the basement.

Walls can very well be made of planks without being load-bearing.

Check that there are no beams in the ceiling using the wall as support, if so you should probably replace it with a laminated beam.
 
Thank you for the response!! However, the green-marked wall is supported from the basement and also continues on the upper floor. Can we continue with the demolition and reinforce with possible glulam afterwards? Boards in the ceiling are visible in the former door frame's cavity. Do these need to be removed to ensure the question of beams with the wall as support? Attaching picture. Thanks again!!
 
Exposed wooden beams in a ceiling with a beam joist partially removed, revealing structural components and a flashlight illuminating the area.
 
These boards run suspiciously in the same direction as the floor on the upper level.
 
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