Replace 4.8 m load-bearing wall

[c_vette]

Hello everyone

For those who know more than I do.

I'm in the process of expanding our 1 1/2 story house and have reached the point where the basement over the new section is complete and the flooring above is finished with 45x195 cc 40 cross-braced and supported by a central wall in the basement.

Now I want a large room on the "ground floor" without a central wall and need to replace it with something else to support the upper floor (1/2) story ceiling and the trusses at the center.

What would be appropriate, a glulam beam or a steel I-beam?
I prefer glulam but how thick would that need to be, I don't want to duck on the ground floor to pass under....?

The conditions are:

Width/span of the 1/2 story ceiling and trusses and the house's width is 7.4m
The length of the beam to replace the central wall=extension/expansion of the house is 4.80m

Help me if you can or give me tips on who can calculate this, I live just north of Västerås.

 

[MathiasS]

I can't size it for you, but I think you should expect it to be a glulam beam that's about 350-400mmx100-150 or an H-beam that's 220-240mm high. So, pretty large things.....

 

[Fein]

Did some calculations in a program from martinssons trä (not an expert) and figured that you would need 115*630 glulam. It's nice to have a big fat beam in the ceiling ;D

 

[c_vette]

Counted using the load program Martinson had and concluded glulam at 115X495 or possibly 115x405 so it's just to forget, didn't want to crouch on the ground floor :´

So it's just a matter of hunting down an H/I steel beam in the V-ås area......anyone know who has those?