Switching of balcony, size of beam?

[Patzie]

Hello! Wondering if anyone has an idea if it's possible to swap out this balcony so you can get rid of the two support pillars in the middle. And what dimension of laminated wood it requires, or steel if that would be advantageous. The span is 9m and as the picture shows, the last roof truss is supported by the outer wall and the pillars, but I think the weight shouldn't be too enormous since it's just a balcony and the concrete tile roof that the last truss "carries".

 

[Åsa Lund]

A pillar in the middle is probably easier to solve if it had been an option?

 

[Patzie]

A pillar in the middle is probably easier to solve if it had been an option?

Well, then you get a pillar right in front of the balcony door, so it feels bad. It will be a beam without a pillar, just need to know what dimensions we are talking about

 

[Åsa Lund]

Unfortunately cannot calculate it

 

[justusandersson]

The central pillars likely only support the balcony load. The roof loads rest on the outer walls. To calculate it, you need to know the balcony's dimensions (length and depth). If the balcony is 2 meters deep and there are to be no pillars, a glulam beam approximately 90x630 mm (alternatively 215x450) is needed. Two pillars placed just one meter from each end significantly reduce the dimensions. In steel, it's about an HEA 260 beam or similar. Weighs over 600 kg and costs around 15000 SEK.

 

[Patzie]

The central pillars probably only support the balcony load. The roof loads are distributed to the outer walls. To calculate it, you need to know the dimensions of the balcony (length and depth). If the balcony is 2 meters deep and there shouldn't be any pillars, a glulam beam around 90x630 mm (or 215x450) is needed. Two pillars located just one meter from each end significantly reduce the dimensions. For steel, it's about an HEA 260 beam or so. Weighs over 600 kg and costs about 15,000 SEK.

Okay, then a 215x450 sounds like a good size so you don't hit your head on it when you're on the terrace the balcony is 6.5m long and about 1.2m deep

 

[justusandersson]

Then the dimensions will be considerably smaller. 90x405 or 215x315.

 

[Patzie]

Okay, even though the span is 9m? Because the upstands (outer walls) are 9m apart, but the balcony itself is smaller due to the roof slope as the image shows

 

[Patzie]

The trusses look like the green ones all the way through the house if they say anything more, and where the pillars are on the outside, the corresponding heart walls are on the inside of the house supporting the upper floor.

 

[justusandersson]

Now you have to decide. Is the width of the balcony 9 m? In that case, we have to increase a bit. 90x495 or 215x405.

 

[tobbbias]

Maybe you can move your pillars here:

However, I don't know if you like it better than before...