Replacing/exchanging beam

[justusandersson]

If you can fit a 165x400 glulam beam with a 2.5 meter span, you can drive a tank on top of the roof. No need to calculate further.

 

[nino]

165x270 can that also work? Without having to calculate a lot?

Or what do you think is the minimum size for laminated timber to have both belt and braces?

 

[justusandersson]

165x270 will also suffice. Probably a considerably smaller dimension would work, but then calculations need to be done more precisely. 165x270 can handle 5 tons per meter of distributed load without sagging too much.

 

[nino]

Ok then I should order one of those or a slightly higher one depending on the price.
Will it handle a 3m span as well?
In case I want a larger glass section later?

 

[justusandersson]

Probably, but there is a big difference between 2.5 and 3 meters in this context.

 

[nino]

Then it will have to be 2.5m to avoid causing any mishaps.

 

[nino]

140x360 or 140x405?

 

[nino]

140x315 corresponds approximately to 165x270, right?

 

[justusandersson]

140x315 is better (approx. 35%) than 165x270.

 

[nino]

Then I'll go with that

 

[nino]

It ended up being 165x315 in the end, arriving in 1 week.

What type of posts should I have, should I use glulam there as well? 165x165, or is it enough with two or three 45x170 at each end?
Screw and glue them together? Height about 2-2.4m

They will be "freestanding," about 0.5m from existing joists, but I'm thinking of also adding supports at the ends that are screwed to the existing joists.

 

[nino]

Here's what it looks like when detached


Just cut and put there?

 

[nino]

That was it, there was no pressure at all on any beams.
Now it's in place, will frame and cover the inside then the door will go there