I've read some threads about steel beams and trusses and see that there are many knowledgeable people here helping us members. I would be incredibly grateful if someone could take a look at my "problem" below.
General info:
Garage 136m2
Wood frame, wall studs 45x145, 3m high
Roof angle 28 degrees
Width 9m
Total garage length 17m
Design standard: European Construction Standard - EKS11 (BFS 2019:1)
Location: 388 92 Ljungbyholm
Snow load value: 2 kN/m2
Self-weight outer roof: 0.40 kN/m2 - Metal roof with insulation and internal cladding
The garage was initially planned with rafters in 270x90 glulam, alternatively lightweight beam HB350s.
(considering price vs labor hours)
So far so good
The original plan was 115x495mm glulam as a ridge beam, but then I would have a post right in the middle of the open space in the garage, which would drive me crazy.
Entering the dimensions on byggbeskrivning.se and find that no beam can handle this load.
Then comes the tricky part: I have an 11.5 m span on the large section of the garage.
Previously, I had a post, i.e., 6m glulam beam - post - 6m glulam.
No wooden beam can handle this load, so naturally, I'm thinking STEEL and trusses?
I have a good friend who runs a business and can manufacture the truss for me but can't help with the calculations.
Do you have the ability to specify how the truss should be manufactured to handle the stress?
Better to overestimate the materials than to have it sag mm.
Drawings and info below:
A HUGE THANK YOU IN ADVANCE IF ANY WONDERFUL SOUL CAN HELP
I'm no expert in the subject, but it's easy to imagine that an iron beam would be stronger, but it's not always that simple. I would think that such an upright beam in your case would be very high. So high that it might be easier to redesign everything and perhaps choose another type of roof truss. But it might then need to stand on some other type of foundation, and yes, most things could go wrong. Building this large in wood and avoiding posts inside is probably not so simple. Then it's probably easier to have posts and then doors in the other direction so you get compartments and they don't bother you. If you have doors on the short side, I agree that the post would just feel in the way. But two compartments from the other direction would not be like that at all. Then you could even have a wall halfway in and the post would disappear.
I'm not an expert in the subject, but it's easy to imagine that an iron beam would be stronger, but it's not always that simple. I would guess that such a standing beam in your case would be very tall.......So tall that it might be easier to redesign everything and perhaps choose another type of truss. However, it might then need to stand on some other type of foundation, and yes, most things might go wrong.......Building something that large in wood and avoiding interior posts isn't very simple. It might be easier to have posts and then doors in the other direction so you get sections and they don't bother you. If you have doors on the short side, I agree that the post would just feel in the way. But two sections from the other direction wouldn't be like that at all. Then you could even have a wall halfway in, and the post would disappear.
The slab is already cast, so it will be difficult to rotate the garage
I'm thinking more of a truss structure rather than like an I or H beam, as you can see riding halls/storage/gymnasiums with crazy spans using trusses in the roof.
I've also requested a quote for scissors trusses as a plan B You lose a bit in height, but it would definitely work.
There are plenty of creative solutions for this, but it requires construction calculations, and if no one has the time and willingness to do it for free for you, you'll likely need to hire an engineer for a few hours of work. One possible approach could be to use a frame/scissor/truss roof truss only where you have the post and support the beams on it. You lose the ceiling height locally where the truss is located, but you get rid of the post and have it open on both sides. You might need to put 2-3 trusses together to handle the load. Just one of many possible solutions. Most truss companies have truss programs that easily perform the calculations.
Wouldn't it be possible to have a truss or two where the post is and then have them standing on posts out by the walls? Just an idea with a different angle.
The slab is already cast, so it will be difficult to twist the garage
I'm thinking more of a truss construction rather than, like, I or H beams; you see riding arenas/warehouses/gymnasiums with crazy spans with trusses in the ceiling.
I've also received a quote for scissor trusses as a Plan B You lose a little in height, but it would definitely work.
didn't mean it that way, just place the doors on the long side.
There are plenty of creative solutions to this, but it requires structural calculations, and if no one has the time and desire to do it for free for you, you'll probably have to hire a constructor for a few hours of work.
One possible way could be to use a truss/scissor framework only where you have the post, and support the beams on it. You lose ceiling height locally where the truss is, but you avoid the post and have an open space on both sides. You might have to put 2-3 trusses together to handle the load. Just one of many possible solutions.
Most truss companies have truss programs that easily do the calculations.
I can absolutely pay a bit for it, but some like to help others as a good deed and get help with other things here on the forum. But otherwise, I'll have to hire someone it's a small cost in this build
Should the garage be completely open or divided according to the plan?
The wide part will be completely open, the narrower part is separated, half/half storage and either space for a ride-on mower or a workshop with dust-producing machines. Not completely decided yet
Well, unfortunately, the house is there, so if I don't buy a Fiat 500, I won't fit
Yeah, it might get a bit cramped maybe.........In this situation, I would probably accept the post. If there's space for a car both in front and behind, I don't think it would be in the way so much that it would be a huge bother. It could also be a good thing since you can set up electricity and compressed air centrally.
Well, unfortunately, the house is there so if I don't buy a Fiat 500, there won't be enough space
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But on the floor plan, you have an interior wall and a staircase almost where the pole is. Can't you move the pole so that it becomes part of the interior wall (or is the floor plan no longer current?)?
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Mike_the_pip3 said:
The slab is already cast, so it will be difficult to twist the garage
Andreas_kalmar said: