Is it not possible to get roof trusses for this?

[BennyOlsson]

Hello!

We are just in the process of building a house, and the building permit is finalized. However, not all the construction drawings are complete yet, including the roof (the engineer estimated about 2 weeks for those).

I have submitted the regular building permit drawings to Granngården for some quote requests, etc. And they sent out an inquiry for roof trusses as well.
The response was that it wasn't possible to make roof trusses for the garage in the way we want.
I do NOT want a pillar in the middle of the garage.

However, I was considering if maybe an HEA beam above the garage door would work, and then one that in turn extends from it towards the partition wall to the storage room to provide a load-bearing function in the middle? They also mentioned something about the roof trusses being too high to transport. Could that be true? I think I have seen much worse constructions than this.
The roof angle should be 40 degrees.
Edit: I noticed that the measurements are hard to see. It's 9500mm wide, outer dimensions.
(the walls will be Isoblock if that makes any difference.)

What are the other options? Narrow the garage by a meter or something?
There is no requirement for us to have an upper floor, so it’s perfectly fine with truss roof trusses if that's better.

Thanks for the feedback.

 

[jonand]

Of course, that must work. Request quotes from several and load your VISA and it should sort itself out.

 

[Snailman]

'We manufacture roof trusses up to 24 meters total length in one piece with a maximum height of 3.3 meters.'

http://www.takstolsfabriken.se/

probably depends on the maximum height of road tunnels, I would think

if they need to be higher, it is probably possible to get them in two parts (usually occurs on one and a half-story houses sometimes, I have seen)

 

[BennyOlsson]

But if you want to have them in two parts, then you probably need something supportive in the middle I guess... or?

 

[Bob_the_builder]

Yes, it will require a beam for support in the middle. I have never seen trusses for 40 degrees (and wouldn't that be wasting a nice attic space?), and they're probably not divisible either(?). Buy framework trusses (split) and make sure the designer calculates the requirements for the beam.

 

[BennyOlsson]

Ok. Thank you for the reply.

Can you do something like this then?
I really want the garage to be open... meaning no pillars in the middle.
Is an HEA beam the option then? How long can those be?

(Now this is a picture I made of the wall with the garage door, and behind it I have the wall that borders the storage room.)

 

[Bob_the_builder]

Yes, something along those lines. It could of course be a glulam beam as well, but it would need to be a bit taller to withstand the same load as HEA. How long it can be at a certain dimension must be answered by an engineer (the truss manufacturer).

 

[BennyOlsson]

Thanks! Now I have a little understanding of the whole thing.

Thanks for the info, everyone!

Best regards, Benny

 

[Milkshaken]

Or why not manufacture the roof trusses yourself??? Easier than you think and definitely much cheaper...

 

[Bob_the_builder]

I don't think it's cheaper at all unless you have good contacts who offer low prices on construction timber... The sizing should still be done by someone who knows what she/he is doing.

 

[BennyOlsson]

Well, I'll order them ready-made, as I want to be sure it's correct. I'll do some parts of the build myself, but I want to avoid worrying about that particular part

BUT.. I just talked to an acquaintance, and he also had problems with them thinking the span was too large.. so it became something called Jakre roof truss, and then it worked....
Never heard of it... I'm not sure if he misspoke... because when I searched a bit now... I found something called Kerto beam.
Shouldn't it be possible to fix roof trusses with Kerto beams instead?

/Benny

 

[Bob_the_builder]

Yes, well... likely, but it sounds expensive... It's possible that it relies on replacing the subframe with Kerto instead. I can't answer if that solves the problem. But give a call to a truss company. They can surely answer such a question from memory!

 

[BennyOlsson]

mm.. I'm scared of it

Yes, I will call around and listen.

Thanks for now
Best regards
Benny

 

[Milkshaken]

But if you're going to invest in Kerto, then maybe you should invest directly in a vaulted ceiling... so not Kerto in a traditional truss construction, but precisely as a free-spanning truss.... around 35cm in height should be enough, I think.... Vaulted ceilings are stylish and airy.

 

[JanneL]

Wouldn't it be possible to insert two longitudinal beams instead of one? I imagine that one could then reduce the beam dimension and that support legs could be mounted from these beams.