Designing trusses with a long span, a real challenge.

[Samwest]

If I understand your measurements correctly, it should look something like this:
[image]

Does this seem right?

Not quite, I misunderstood one measurement, and that is the measurement from 3250 from facade to frame, it should be 2190. The windows should be centered, and the long part should then be on the right from this view.

 

[Samwest]

We have probably come up with a solution, but don't think it's so common? Attached is a picture. What do you think about building this way? That is, building beams out from the existing facade to the new ones.

 

[bossespecial]

We have probably come to a solution, but I don't think it's very common? Attached is a picture. What do you think about building this way? That is, building beams out from the existing facade to new.

[bild]

I quickly calculated such an option and it results in very dense spacing with joists using glulam or Kerto. As I mentioned earlier, one could lay two pairs of beams across the garage on each side of the ridge and then be able to use construction timber as roof joists. However, I would suggest that the two beams be made of steel as the glulam alternative resulted in large dimensions.

 

[Takstolsnissen]

If I were to do this myself, I would follow this principle:

Trusses according to the section
If that's how you want the truss, mainly considering the overhang and eaves height, as well as the height of the frame and the desired opening for the garage door. The H-beam will be quite substantial with that span.


Then the big problem is the snow pocket that forms here, which results in significant additional snow loads that must be addressed. This means we need double trusses at about c/c 600 (quickly dimensioned):


To avoid having the trusses so close together, the eaves height must be raised quite substantially. Alternatively, an inner wall could be added, or a beam with a central pillar can be installed.

 

[Samwest]

This is probably how it will have to be, even though I somehow would have preferred to avoid building a new inner wall.

 

[Takstolsnissen]

This is probably how it will have to be, even though I somehow would have preferred to avoid building a new inner wall.
[bild]

Just think about how you’re going to solve the slope properly. The positive thing is that you get high ceilings.

 

[Takstolsnissen]

Just think about how you should solve the ventilation in a good way. The positive thing is that you get high ceilings.

Oh, it should have said ventilation.

 

[Samwest]

Just think about how you will solve the pitch in a good way. The positive thing is that you'll have high ceilings.

Yes, the roof pitch should be addressed, but the more I think about it, the less I want to build up a new load-bearing interior wall. But I don't see any other solution right now.

 

[Takstolsnissen]

Yes, that's how it is, the roof slope should be adjusted, but the more I think about it, the less I want to build a new load-bearing internal wall. But I don't see any other solution right now.

Did the solution with roof trusses feel too expensive or?

 

[bossespecial]

Post #29, Ridge beam in laminated wood/steel with rafters of structural timber or laminated wood/kerto. Easy to construct and ventilate the roof. I would go with this.

 

[Samwest]

The solution with roof trusses felt too expensive or?

No, not at all, as the glulam beams also become crazily expensive. It was just that the roof pitch was so low and now with the new principle, we've adjusted the roof pitch and achieved a higher inner ceiling, plus I can use roof tiles.

Post #29, Ridge beam in glulam/steel with roof rails of construction wood or glulam/kerto. It builds a little, and the ventilation of the roof is easy to manage. This is what I would go with.

Yes, this sounds good if it can be achieved, but I've been experimenting a bit in some dimensioning tool and can't get it to work.