Calculate steel beam

[TuXy]

Is anyone skilled at calculating beams?

Here is a house where the wall between the dining area and the office needs to be replaced by a steel beam.
Snow zone 1 with concrete tiles
The roof trusses are classic framework trusses
Single-story house with a bedroom above
The house is 8 meters wide and the opening measurement for the beam is 3 meters (plus the supports needed on each side)
The structure of the house is concrete and the intermediate floor is wood

 

[Stefan1972]

Is it even a load-bearing wall? The picture is a bit unclear but is there a wall that continues in the middle in the rest? If it's kind of open then the wall you want to remove is probably not load-bearing either.

 

[TuXy]

Is it even a load-bearing wall? The picture is a bit unclear, but does the wall continue in the middle into the rest? If it's open, the wall you want to remove is probably not load-bearing either.

Yes, it is a load-bearing wall or actually a glulam beam that is currently there, but I want to replace it with a steel beam instead because the glulam is so large, and my aim is to enclose the steel beam. The drawing is poor, but there is a structural wall running horizontally through the house in the image.

 

[Stefan1972]

If you have glulam today that is calculated, I find it hard to see that a steel beam will be smaller. One might think that steel is stronger, but in practice, it is not the case. With a little distance, they become quite flimsy and if they need to bear any weight, they end up being quite tall instead.

 

[tracker]

Can't you put the wooden beam on top of the roof trusses in the attic and add braces so it doesn't take up space downward...

Edit missed that it was a single-story house with bedrooms above, how that works (should be 1.5 stories then)

 

[TuXy]

If you have glulam today that is calculated, I find it hard to see that a steel beam will be smaller. One might think that steel is stronger, but in practice, that's not the case. With a little distance, they become quite flimsy, and if they are supposed to carry any weight, they become quite tall instead.

Yes, the glulam is 90x315 and I would guess that a HEA180/HEB160 should suffice. But you would definitely want to confirm that, I think.

 

[TuXy]

Can't you place the wooden beam on top of the rafters in the attic and attach braces so it doesn't take up any downward space...

Edit missed that it was a 1-story house with a bedroom on top, how that works (should be 1.5-story)

That's correct that it's 1.5-story, so the beam needs to be below or within the mid-floor structure.

 

[Byggkonsult89]

Hello,

Yes, a steel beam would become somewhat smaller in height, to calculate this you would need to determine the load and the span so that you can calculate the correct dimension of the steel beam.