Calculate glulam beam

[RickardE90]

Hi.
New here on the forum and I have a question.
My partner and I have bought a 2-story house and are planning to open up a part of a load-bearing wall on the ground floor.
The ground floor is about 3 meters longer than the upper floor, and thus the load-bearing wall does not start until about 3 meters into the house (see image from the side).

Exactly where the upper floor begins, a load-bearing wall starts downstairs.
Where it's only the ground floor, it's completely open.
We want to open up the first meter of the load-bearing wall and support this with a glulam beam that extends through the entire part where it's only the ground floor and then 1 meter in where there is currently a load-bearing wall.
The beam is then loaded on one side and how do you calculate the dimension needed for it?
Even though the beam needs to be approximately 4.2 meters long to reach the outer wall, it's only loaded for the first meter, even if that pressure spreads out..?

The house is 6 meters wide and the load-bearing wall is 2.4 meters from one side and 3.6 meters from the other.
Help me figure this out, please

 

[petterovski]

To clarify. You want to place a beam under the floor structure on the low part of the house that will cantilever about 1 meter into the larger house body?

I think it sounds a bit risky. Such a measure is likely to require a building notification and that you hire a structural engineer to calculate it.

If you provide a floor plan and sectional drawing, it might be possible to say more, or come up with some alternative solution.