C14 or C24 45x120 for garage frame?

[Putte 9497]

Why skimp on the sizing of the timber? Keep in mind that the garage should last for many years to come.

 

[Mikael_L]

The question is whether it is okay from a structural perspective to use shortrelgel 45x120x2500 c14 instead of, for example, 45x120 c24 which must then be cut at least once.

Yes, it's probably guaranteed to be OK. You don't live in snow zone 6 and usually get snowdrifts on the roof...

I don't know if there is any place in Sweden that doesn't manage 45x120 at 2.5 meters in length as wall studs, it must be among the worst snow locations in that case...

When the sheet material is in place, the studs are braced in the weak direction.

I calculated for my garage, with 120x45 and 4 meters span, and had very good margins with my snow zone 2.5.

 

[earlo]

Thank you for all the responses and thoughts on sizing.
The idea is that the walls inside will be covered with OSB and plasterboard.
Snow zone is 2.5.
According to byggbeskrivningar.se, the self-weight from the roof (concrete tiles, insulation) is 0.9 kN/m2.
This then results in approximately 3.5 kN/m2.

 

[vectrex]

Why skimp on the sizing of the timber? Remember that the garage should stand for many years to come

It doesn't stand fewer years because you're using weaker timber. Or well, if it isn't maintained at all and water starts leaking in, it does take longer for a stronger beam to rot, admittedly.

I'm all for building robustly, but in cases where it's not needed or doesn't even make a noticeable difference, it's just a waste of money, resources, and space.

 

[Putte 9497]

Of course, it makes a difference whether it's 45x120 or 45x145 or higher

 

[Rickard.]

My entire house (all load-bearing walls) is built from 45x120, ≈50 years old, what should I be on the lookout for, putte?