Large dormer

[OggeSttrid]

Hello,

I'm planning to build a double garage with leca. There will also be a fairly large workshop (lathe, grinder, lathe, car lift, eccentric press, etc.).

So I wonder if a slanted roof 4.5 meters wide is possible. Is it possible to splice the boards with iron as it seems very difficult to find the right length? In short, is this possible? I would prefer to avoid a gabled roof.

Best regards,
Oscar

 

[z_bumbi]

Glulam beams are available in optional lengths if you order, but for example, 5 m can be in stock.

It is also perfectly fine to splice ordinary studs, but with a long span, it can result in very high studs and/or a tight spacing between them.

Swedish Wood has calculation programs on its website where you can find suitable dimensions.

 

[OggeSttrid]

Thank you for your response. Now I have options at least.

Kind regards,
Oscar

 

[Gabbe1]

I don't quite understand how the building is supposed to look.
Double garage and large workshop, 4.5m wide. These two things don't go together.

Building a monopitch roof with a 4.5m width is no problem, if that is your question?

 

[richardtenggren]

My garage is 8 m wide, 10 m long, no laminated timber. But, I do have no workshop

 

[OggeSttrid]

My garage is 8 m wide, no laminated timber. But I admittedly don't have a workshop

I don't really understand what the building is supposed to look like.
Double garage and large workshop, 4.5m width. These two things don't go together.

Building a shed roof with a 4.5m width is no issue, if that is indeed your question?

I don't really understand what the building is supposed to look like.
Double garage and large workshop, 4.5m width. These two things don't go together.

Building a shed roof with a 4.5m width is no
issue, if that is indeed your question?

I honestly thought that studs didn't exist in that size. Good to hear that they do.

 

[OggeSttrid]

My garage is 8 m wide, 10 m long, no glulam. But I don't have a workshop

Wow, so you don't have glulam beams to reach that size. That was good news.

 

[klaskarlsson]

Hello,

I am thinking about building a double garage with leca. There will also be a fairly large workshop (lathe, grinder, lathe, car lift, eccentric press, etc.)

So I wonder if a sloped roof 4.5 meters wide is possible. Is it possible to splice the boards with iron since it seems to be very difficult to find the right length? In short, is it possible? I would prefer to avoid a pitched roof.

With kind regards,
Oscar

Generally, you cannot splice a roof truss (which this would become) with iron, you will get a deflection and over time the roof could even collapse. Instead, you should look at a glulam beam, or you need to have a support in the middle (and then you can splice, but usually, a smaller dimension will also suffice).

For glulam, 4.5m does not seem to be a major problem even in higher snow zones...

https://www.traguiden.se/konstrukti...uktionsvirke-i-ett-fack/?previousState=000100

https://www.traguiden.se/konstrukti...ar-av-limtra-i-ett-fack/?previousState=000100

 

[OggeSttrid]

Generally, you can't splice a truss (as this would then become) with iron, you will get a deflection and over time the roof may even collapse.
Instead, you should look at glulam beams, or you need to have a support in the middle (and then you can splice, but usually thinner dimensions are sufficient as well).

For glulam, 4.5m does not seem to be a major problem even in higher snow zones...

[link]

[link]

Ok, I didn't know this. It was a carpenter friend who thought it didn't exist (he probably never worked with that size)

 

[Gabbe1]

Now I think you/we are talking about different things.

If you want an 8m width with a pent roof (what TS calls a pitched roof), you will need trusses or heavy beams; regular studs will not work.

However, a 4.5m width might work with lumber, depending on the roof's own weight, snow load, and how densely the rafters/studs are placed. "Regular" studs are available up to 5.4m at regular hardware stores.

 

[OggeSttrid]

Now I think you/we are talking about different things.

If you want an 8m width with a shed roof (what TS calls a sloped roof), then you'll need roof trusses or strong beams, regular studs won't work.

4.5m width, on the other hand, might perhaps work with stud framing, it depends on the roof's own weight, snow load, and how closely the rafters/studs are placed.

Then it means that you don't need a glulam beam (unfamiliar with the terminology)

 

[Gabbe1]

Then that means you don't need a glulam beam (unfamiliar with the terminology)

Did you misunderstand my answer, or are you intentionally interpreting it like the devil reads the bible?

"It might possibly work with regular timber, it depends on the roof's own weight, snow load, and how closely the rafters are spaced."

Before these things are investigated, I wouldn't dare assume that "ordinary" rafters would suffice.

 

[OggeSttrid]

I misunderstood it. I meant absolutely no harm by it.