Which walls are load-bearing?

[psu]

Anyone knowledgeable who can tell which walls are load-bearing from this picture?

 

[roli]

I would think that these walls are load-bearing. Probably not the ones on the upper floor that I drew in quickly, but they support if you have the opportunity to go up to the attic.

 

[psu]

Thanks, that's what I thought too
It's possible to go up to the attic so I guess it's good to keep those walls as intact as possible and stagger if you want to make openings larger or so.

 

[justusandersson]

The walls on the ground floor that @roli has marked in red are likely load-bearing, but it's not certain that only these are. On the upper floor, the posts in the knee wall are load-bearing, probably not the other partition walls, unless the attic is overloaded with junk. In houses from the time when massive planks were used, the beams on the same floor can run in different directions. This must be checked to be on the safe side. What makes me suspicious is the kitchen, which is long and narrow across the house's length.

 

[psu]

I think the red ones are load-bearing along with the chimney located in the middle, does that sound reasonable?

 

[justusandersson]

Even the wall between the kitchen and the bedroom can be load-bearing. Check the direction of the floor joists in the room above the kitchen. Chimney stacks are never load-bearing except in very old houses. On the upper floor, only the knee wall partitions are load-bearing.

 

[psu]

What is considered very old in this context? The house was built in 1922. The wall between the kitchen and the bedroom on the ground floor has been moved just before the doorway in the bedroom. Possibly, a steel beam has been added in the ceiling where it was before.

 

[justusandersson]

Very old is < 1850.