Are any of the walls load-bearing?

[Turbo123]

My house consists of two apartments and the floor plan is to be modified to create a large house. It is a single-story wooden house (stick-built), 160m2, on a crawl space foundation, built in '93.

Before I start, I need help figuring out if any of the walls to be removed might be load-bearing.

I have attached two drawings, the original and one showing what to add and what to remove.
(Green = new walls, red = walls to be demolished)

 

[Villa vista]

The middle wall/apartment separating wall is load-bearing; otherwise, the walls are probably not load-bearing.

 

[fahlis]

Not certain that any interior walls are load-bearing at all. What does the roof structure look like? Can you show a section?

 

[injonil]

The middle wall/apartment dividing wall is load-bearing, otherwise, the walls are probably not load-bearing.

Why do you think the middle wall is load-bearing?

 

[Villa vista]

The middle wall is probably not load-bearing according to the trusses, but it should be structural stabilizing. It is impossible to determine load-bearing walls with an a-drawing or plumbing plan. However, it is the only wall that appears to have a structural function.

 

[injonil]

Ok, yeah, it's possible!

The fact that it's a bit more robust could also be because it's made with better soundproofing since it separates apartments.

 

[vincentaun]

If it is a gabled roof, I would guess that a wall running in the same direction as the ridge is probably load-bearing

 

[fahlis]

We don't yet know what the roof looks like or in which direction the ridge goes. But otherwise, you could be right.

 

[Elkludde]

The most likely scenario is that the ridge runs along the longest side, and thus the center wall (hjärtväggen) is load-bearing.

 

[fahlis]

If the roof rests on trusses, no heart wall is needed.
The longest span appears to be perpendicular to the apartment-separating wall.

 

[Turbo123]

The ridge runs the longest direction, from left to right in the floor plan.
It is correct that the thick wall contains extra insulation.

Drew a primitive sketch of the principle Is it called a gable roof or truss construction, or what is it called?



* Can I assume that all walls running in the same direction as the roof trusses should not be load-bearing?

 

[Elkludde]

The ridge runs in the longest direction, from left to right in the floor plan. It is correct that the thick wall contains extra insulation.

I drew a primitive sketch of the principle

[image]

* Can I assume that all walls going in the same direction as the trusses should not be load-bearing?

You can safely assume that; however, I believe the Hjärtvägg is partially load-bearing.

 

[fahlis]

You can assume that only the outer walls are load-bearing.
It is a gable roof that rests on truss rafters.

 

[thomas33]

My previous house was an LB-house from 1980. 8 m wide and no load-bearing interior walls. Roof trusses similar to the ones you sketched, so it should be possible to remove and relocate the walls you want to change.