Help with sizing structural timber for load-bearing beam

[Novisfixaren]

Planning to extend the existing garage and carport according to the pictures. The shed roof will continue at the same angle as the existing extension.

I want to keep the wood dimensions down due to already low ceiling height at the far right of the new extension.

I have concluded that 45x170 C24 works for roof beams at cc 60 with a span of 3.5m as it will be in each section.

The roof beams will be attached to the support beam with joist hangers to avoid additional low ceiling height.

I don't want a full inner wall but could consider posts. The question is, based on the sketch in the picture, what dimension of the support beam works? The distance between posts is currently 2.5m max. Would two glued 45x170mm C24 be sufficient or do I need posts even closer than 2.5m then?

Very grateful for assistance.

 

[Eddie W]

Where do you live in the country? Snow load?

 

[Novisfixaren]

Where do you live in the country? Snow load?

Southern Halland, Laholm 1.5

 

[Novisfixaren]

Hmm no one?

 

[ricebridge]

Here is a good help.

https://www.svenskttra.se/publikationer-start/publikationer/lathunden/

 

[Novisfixaren]

Here's a good help.

[link]

There is nothing about the dimensioning of support beams.

 

[Eddie W]

Download the "Svenskt trä" guide, which Ricebridge linked to. Then you have "dimensionering" in the app. There you'll find the help you’re looking for.

 

[Novisfixaren]

Download the "Svenskt trä" guide app, which Ricebridge linked to. Then you have "dimensionering" in the app. There's the help you're looking for.

It doesn't say anything about dimensionering of support beams under roof rafters?

 

[Novisfixaren]

Is there anyone who could take a look at my "case" and give an opinion on load-bearing beams and whether attaching to the load-bearing beam with joist hangers is okay, or if I should place the roof joists on top of the load-bearing beam despite the reduced ceiling height under the actual load-bearing beam.

 

[Joachim Johansson]

Have you considered using self-supporting roofing sheets? Then you don't really even need any rafters for the roof.. Just sturdy beams.

 

[Novisfixaren]

Have you considered using self-supporting roof sheets? Then you don't really need any rafters for the roof... Just solid carrying beams.

That won't work because the roof must have the same sheet profile as the existing extension since the new extension is to follow the existing one.