Garage build, help with beams

[Gabbe1]

Since there is no information on the loads the roof will contribute (wind, snow, dead weight), one should be cautious in advising on this.

But if I were to estimate a bit, you should be able to sleep well with VKR 120x120x10mm, as these can handle about 100-150 (depending on the steel quality) tons each in pure compression.
Probably you could manage with significantly slimmer pillars as well, but as mentioned, there is too much information missing.

 

[CoolGate]

Since there is no information on what loads the roof will contribute (wind, snow, self-weight), one should be cautious about advising on this.

But if I were to make an educated guess, you should be able to sleep well with VKR 120x120x10mm, these can handle about 100-150 (depending on steel quality) tons each in pure compression.
You probably could manage with significantly slimmer columns too, but as mentioned, too much information is missing.

100-150 tons sounds extremely good better safe than sorry..
would you have used the same beams upwards to the ridge as well or would you have taken lamellar wood there?

 

[CoolGate]

Since there is a lack of information about the loads that the roof will contribute (wind, snow, self-weight), one should be careful when advising on this.

But if I were to make an estimation, you should be able to sleep well with VKR 120x120x10mm, these can handle about 100-150 tons (depending on the steel quality) each in pure compression. You could probably manage with significantly thinner pillars as well, but as I said, too much info is missing.

If you look at my drawing, how would you build the construction if you had free hands... an estimated example with the info you have for the large beams... (please sketch a little if you can) Then you can send me your address in a PM so I can send you Friday snacks (cake) as a token of gratitude for your help!

 

[Gabbe1]

Thank you for the offer but I am not a trained structural engineer, just a mechanical engineer who has built a couple of houses. I also only have experience with more traditional buildings with gable roofs.

When it comes to the columns, I would have gone with steel all the way, but that doesn't mean it's better; it's because I'm a steel nerd. Glulam on the upper part will surely be just as good in your case.

 

[CoolGate]

Thank you for the offer, but I am not a trained building engineer, just a mechanical engineer who has built a couple of houses.
I also only have experience with more classical buildings with gable roofs.

As for the columns, I would have gone with steel all the way, but that doesn't mean it's better, it's just because I'm a steel nerd, glulam on the upper part is probably just as good in your case.

But your answers have at least been logical and helped me a lot in the thinking and calculations.. so please write your address

 

[Hobbit]

No matter how you do IPE HEA or glulam - just remember that the slab should be a bit stronger and extra reinforced where the columns will stand. We had a calculated 150mm slab and under the columns 300mm. Maybe a bit overkill but on the safe side.

 

[Gabbe1]

Thank you, but I share everything I write here
I think it's a big part of the charm of this forum, generally a friendly atmosphere, reasonable discussions, and lots of helpful people with an enormous range of collective expertise.

Good luck and feel free to post a build thread here so we can all follow the project.

 

[CoolGate]

This is how it turns out now thanks to your help Gabbe1 + others...

2 VKR 120x120x10 at 2.3m
1 IPE300 7.7m
2 VKR 120x120x10 at 2.18m
1 Glulam Ridge at 140x720mm
Extra concrete under where the pillars will stand

The construction would be like this: erect 2 VKR pillars at 2.3m and place the IPE300 beam over them (weld), weld the upper pillar to the IPE300 beam and weld on a loop (U) which in turn will hold the Glulam beam in place and screw it. Then it's simpler and smoother to attach the roof, etc., to the Glulam beam than to the steel

Good or Anus idea?

 

[Gabbe1]

It will probably be fine.
I would also have welded web stiffeners in the IPE300 beam where the columns are.

Web stiffeners are used to reinforce the beam at points where there are high point loads, the web in an IPE or HEA is not particularly strong, and therefore it is sometimes necessary to weld reinforcements at these points.

 

[CoolGate]

It will probably be fine.
I would also have welded web stiffeners in the IPE300 beam where the columns are located.

Web stiffeners are added to reinforce the beam in areas where there are high point loads, the web in an IPE or HEA is not particularly strong, so it is sometimes necessary to weld reinforcements in these places.

You were thinking of the inside of the beam?

 

[Gabbe1]

Yep, take flat bar 60-70 x12-15mm, cut to the length of 277mm, grind off two corners to fit against the beam's radius, then just weld it.