What do I do with the walls?

[George-i]

Hello,

I'm about to start a renovation project in my new house and I'm having a hard time understanding if the walls are load-bearing or not and what the actions should be.
The house is a single-story villa with a basement from 1963 with trussed rafters. The outer walls are made of concrete along with concrete panels as intermediate floors.

I plan to remove the yellow-marked wall entirely, and if it is load-bearing, the idea is to install a beam of some sort to compensate. This wall extends all the way down to the basement.

The red-marked walls are walls that I intend to move 50-70cm in various directions. The longest cross wall here has a beam under it in the basement. Note that the longitudinal wall here is not straight all the way, which makes me wonder if it is load-bearing or not.

Blue-marked walls have already been demolished. There is also a beam under the previous cross wall in the basement.

My questions are then:
Does anyone here understand which walls should be load-bearing?
What are the actions for my solutions?
The span of the yellow-marked wall is 4.7m, what type of beam would you recommend to use here? I would prefer not to use one that builds down too much.

Is there anyone experienced here who would like to lend a helping hand to one in need?
Would be appreciated!

Thanks in advance!

/George

 

[Kane]

Hello,

I'm just about to start a renovation project in my new house and I'm having a bit of trouble understanding if the walls are load-bearing or not and what measures should be taken if they are.
The house is a one-story villa with a basement from 1963 with truss roof trusses. The exterior walls are made of concrete along with concrete cassettes as intermediate floors.

The yellow-marked wall is to be removed in its entirety, I think if it is load-bearing, the plan is to have a beam of some kind to complement it. This wall goes all the way down to the basement.

The red-marked walls are walls that I intend to move 50-70cm in different directions. The longest transverse wall here has a beam underneath it in the basement. Note that the longitudinal wall here is not straight all the way, which makes me wonder if it is load-bearing or not.

The blue-marked walls have already been demolished. Even under the previous transverse wall, there is a beam in the basement.

My questions are then:
Does anyone here understand which walls should be load-bearing?
What would be the measures for my solutions?
The span of the yellow-marked wall is 4.7m, what beam would you recommend here? Preferably, I don't want one that builds down too much.

Is there someone experienced here who would be willing to lend a helping hand to someone in need?
It would be appreciated!

Thanks in advance!

/George

A one-story house with truss roof trusses indicates non-load-bearing interior walls, but don't you have any construction drawings of the house?

 

[George-i]

Hello,

I have a few, though perhaps not enough one might think. I'm sending these.

/George

 

[Kane]

Hi,

I have a few, although perhaps not enough, one might think. I'll send these along.

/George

I'm not a structural engineer, just a mechanical engineer....😉
In the calculation file, it definitely looks like the interior wall is load-bearing. Before anything is done, I would check with a designer.

 

[George-i]

Hi,

I have a few, though perhaps not enough one might think. I'll send these along.

/George

Hi,

Thanks for your response. You mean the longitudinal red wall together with the yellow one? The transverse ones don't seem to be load-bearing?

 

[StrukturalAB]

I'm not a structural engineer, just a mechanical engineer....😉
In the calculation file, it definitely looks like the inner wall is load-bearing. Before doing anything, I would check with a structural engineer.

Mechanical engineers can do it too I am a structural engineer. The truss seems to have an internal support, i.e., load-bearing inner walls. Just checked quickly, but it's nice to have the calculations for the truss. The beam required needs calculation, steel if height is limited. HEB for example.

Transverse walls are not load-bearing but can have a stabilizing function with respect to wind loads.