Tear down interior wall, is it load-bearing? Thread No. 2

[Bravvlan]

Hello again forum!

I previously asked a question about whether it is possible to demolish an interior wall but soon realized that I shared far too little information, so I'm making another attempt. This time with more pictures, measurements, and information.

I have recently bought an estate in the form of a log house completed in 1983. The house is built with 220mm thick logs plus studs, chipboard, and insulation inside with a total wall thickness of 450mm (external walls). The house was entirely self-built by a gentleman who took timber from his own forest, dried, debarked, sawed in his own sawmill, hand-hewn, timbered with homemade construction cranes, with various devices, caulked, etc, etc.

So it is:

450mm external wall 220mm timber + internal wall with studs, insulation, and boards
Approx. 22-23° roof pitch in southern Dalarna
Concrete tiles from 1982
Homemade truss W-roof trusses
Span roof eaves trusses 10.5m
Span interior walls trusses 8m
Just over 3.5m of interior wall to be demolished

Attaching a lot of pictures.
The question is whether I need to use a beam +/- pillar where the wall stands.

 

[Leafy]

So, it's the circled wall on the last drawings you want to remove to have more open space around the kitchen and dining area?

Someone with more expertise will surely join the discussion, e.g. @justusandersson but considering the design of the roof trusses, it's only the exterior walls that are load-bearing, and removing that wall shouldn't be a problem without any beam installations.

 

[Bravvlan]

So it's the circled wall on the last drawings you want to demolish to make more open space around the kitchen and dining area?

Someone with more expertise will surely join the discussion, like @justusandersson, but considering the design of the trusses, it's just the outer walls that are load-bearing, and that wall should not be a problem to remove without any load-bearing substitutions.

Yes, exactly. The small circled wall section by the kitchen/little dining room.

 

[Leafy]

Yes, exactly. The small encircled wall piece by the kitchen/dining area.

I would spontaneously assume that the only load-bearing beam in your house is where the roof trusses change direction and that you could remove all the interior walls to have a very open floor plan. I have the same type of truss roof trusses in my house and I had to make a load-bearing beam when I removed a wall where you already have an open area as the drawing shows. I have since torn down a couple of interior walls and built new ones to get a layout that suits us.

 

[Bravvlan]

I would spontaneously assume that the only beam you have in the house is where the roof trusses change direction and that you could remove all the interior walls to achieve a very open floor plan. I have the same type of trusses in my house, and I had to make a beam when I removed a wall where you already have an open space as the drawing shows. Since then, I've torn down a couple of interior walls and built new ones to create a floor plan that suits us.

Okok, yes, that's exactly my feeling too. It is currently beamed with pillars where the roof trusses change direction, attaching a picture from my wife's Instagram. (This was 2 years ago, almost all surfaces are new in the dining/living room.)

 

[justusandersson]

The W-trusses appear to be solidly and competently made, based on what can be interpreted from the pictures. I see no problem with removing the current partition wall. The roof construction in the corner cannot be fully interpreted from the drawing. The term "hanbjälke" does not seem to be used correctly, even though it is a hefty piece of timber. 5x8 inches corresponds to 45x280 mm, which is quite substantial.