I am wondering what alternative timber I can use for my roof trusses since construction timber doesn't seem to be available at byggmax on Gotland.

The house is 4.70 wide. 6m long. Slope from ridge to wall plate 1.30 m

I also wonder if anyone knows how to confidently determine which truss construction is suitable, as I've received different suggestions:
1. Truss with collar tie that has two "struts" as fastenings between the collar tie and the upper parts. Nail/screw everything with metal plates.
2. Truss with only one collar tie and no struts between the collar tie and the upper truss parts. Metal plates here as well.
3. Use a material other than k 24 and double everything, i.e., as if putting two trusses together into one.
4. Truss with only one collar tie and no struts between the collar tie and the upper truss parts. Assemble the parts with plywood that is glued and then screwed instead of metal plates.
What is really best?
Grateful for answers d^_^b
 
Most often, I think trusses are ordered ready-made from a truss factory. You give the measurements to the factory, they design the truss, provide you with finished calculation results (which you still need for the building permit authority as part of the quality plan), and build them for you.

I have personally never bought trusses, but it is said to be surprisingly inexpensive.
 
Those I have talked to have said that they could barely buy the lumber for the same price as finished trusses, in that case, there is no reason to build them themselves...

(I would never dare to take a chance when it comes to such an important load-bearing part of a house)
 
Check with the truss factory in Lye.

www.takstolsfabriken.com also known as 3house.

Snicken, KG Ahlqvist, and Björkmans all have timber. That way, you even get timber you can use.
 
Where we live, there is building permit freedom... - Just start, no paperwork needed. That's what they said at the building board, the only requirement is that the new house is not higher and larger than the main building.
I personally think it would be easiest to order ready-made roof trusses, and I have far too little knowledge of how to make them myself, so they will probably be pre-built anyway. The problem is that it seems to take a while before they can be delivered.
 
there is a book called takstolsboken for this
another option is to look at finished designs for buildings of the same or slightly larger size.

Know that, for example, finja has some buildings with drawings on their website.
 
Mikael_L
Has it been resolved for you?
 
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