I am converting the old stable into a workshop and will need two new load-bearing beams according to the attached image. I initially considered laminated wood beams and did the calculations on http://swelagerbalk.inadire.se/Lagerbalk.aspx, which would mean a 115x450 laminated wood beam in the middle of the garage. I don't want to lose that much ceiling height and happened to come across two steel beams that I can acquire while saving a few thousand crowns. These are HEA 250, and according to a table I saw here on the forum, such a beam would correspond to a much higher wood beam than 115x450, so it feels very suitable when you have access to the beams.
Then I wonder what else should be considered in this case, with such a beam? I have read a bit, and it seems like it is important to anchor an H-beam laterally to prevent them from moving in the construction. Also, steel has a different dead weight and in its way is "soft," so I wonder if such a beam can start to sag over time?
In the outer wall, it's probably not a problem as it will be studded except over the garage door itself (about 3 m). I've calculated that on Moelven's site, and it looks good.
It is possible to secure against movement with some franskskruvar. Otherwise, you can just go ahead. Then you can build a telfervagn to mount on the center beam. It should probably hold a bit of load in addition to the roof.
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