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13 replies
39k views
13 replies
Calculate what a steel H-beam can withstand
Sketching a garage and came across the garage door at 5m and the carport at 6.5m needing a beam. Initially considered glulam but it seems to add quite a bit to the height and then I realized I have some steel beams lying around. Free, so to speak.
The beam in question is an H-beam 14x14 with 10mm thickness.
Can I weld two of these together vertically and handle an opening of 6.5m and 5m?
What factors are needed to determine what they can support?
The beam in question is an H-beam 14x14 with 10mm thickness.
Can I weld two of these together vertically and handle an opening of 6.5m and 5m?
What factors are needed to determine what they can support?
You need to know if it is an HEA or an HEB beam as they have different strength values. But you can always calculate using the lower value to be on the safe side. There are also 3 different strength values for the steel itself. I don't have any tables with me at home, otherwise I might be able to calculate it for you.
How do you find that out?Matti_75 said:You need to know if it's a HEA or HEB beam as they have different strength values. But you can always calculate based on the lower one, to be on the safe side. There are also 3 different strength values for the steel itself. I don't have any tables with me at home, otherwise, I might be able to calculate it for you.
It's about a building that is 8.5x17m with about 3.5m wall height, a roof with a 20-degree roof angle, concrete tiles.
I was looking at a similar support structure today, and he had a 300mm I-beam. I don't know the flange thickness.
Is it an advantage or disadvantage to weld together two beams of this type that I have?
Do you know if these tables you have can be found online somewhere? I'm soon going to help someone install a steel beam and it would be good to be able to calculate it.Matti_75 said:You need to know if it is an HEA or an HEB beam as they have different strength values. But you can always calculate using the lower value to be on the safe side. There are also 3 different strength values for the steel itself. I don't have any tables with me at home, otherwise, I might be able to calculate it for you.
Spontaneously, I don't believe in this about splicing.
If the roof trusses are to lie on the steel beam, I think it's too weak.
Check with an engineer regarding this so you avoid having problems.
If the roof trusses are to lie on the steel beam, I think it's too weak.
Check with an engineer regarding this so you avoid having problems.
Long side. So the trusses will rest on this beam. And I don't mean to splice the length, I plan to take 2 pieces of 14x14 and lay them on top of each other and weld them together to get something more durable.Matti_75 said:
A small floor plan. To the left will be a large gate about 5m w x 3m h. To the right will be a large opening into the carport. Just over 6.5m opening.

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5 m is long. Can't you imagine a post in the middle?
To calculate the beam, you must first know the loads, i.e.:
1. Roof weight
2. Max snow load
3. Max wind load
4. Safety factor
This should be evident from the drawings from the roof truss manufacturer. Then you can size the beams.
To calculate the beam, you must first know the loads, i.e.:
1. Roof weight
2. Max snow load
3. Max wind load
4. Safety factor
This should be evident from the drawings from the roof truss manufacturer. Then you can size the beams.
Bröderna Edstrand (Be-group) has a handbook online called the red handbook (or similar) online. It contains all the necessary data. One must know if it is I, HEA, or HEB beam (measurements are in that catalog).Ola78 said:
It was called the Röda catalog, I remembered. If you haven't found it yet, it is here:Ola78 said:
http://www.begroup.com/upload/Sweden/Broschyrer/Röda_Katalogen.pdf
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