Steel beam 9m span?

[justusandersson]

In theory yes, but I don't know how to solve it practically. If the solution to a problem starts to become a bit extreme, in my experience, one should step back a bit and question previous choices. Sometimes a bit of lateral thinking is needed. It is possible to create a sleek facade construction with relatively slim dimensions using, for example, square tubes if more columns are accepted.

 

[attefall]

Seems like it will be a wooden beam instead. Anyone have a solution/idea on how to make it rest on four posts where the two inner ones are offset?

 

[prototypen]

Is the displacement greater than the beam's thickness?

Protte

 

[attefall]

Is the displacement greater than the beam's thickness?

Protte

Yes, exactly, that seems to be the problem now.

 

[attefall]

A thought from an amateur, can't you screw together several glulam beams on the width? Does it work?
I'm thinking for example 2 pcs 140x266, could that be something?

 

[Plutus]

Another question, the roof is supported by the trusses, right? Which are supported by the side walls, so the gable wall only bears its own weight? If you have a room inside that only has exterior walls, maybe the load on the beam won't be that large?

 

[attefall]

Another question, the roof is supported by the trusses, which are supported by the side walls, so the gable wall only bears its own weight, right? If you have a room inside that only has exterior walls, then maybe the load on the beam won't be that large?

It is a flat roof with a balcony on top.

 

[prototypen]

Unhook half of the post and turn the outer posts on one side and inner posts on the other side

Protte

 

[Plutus]

It's a flat roof, with a balcony on top.

But the flat roof goes over the entire room below, right? So the flat roof is intended to support its own weight? Or is there a central beam going from the gable wall through the room to a load-bearing wall further in?

 

[attefall]

Unhook half of the post and turn the outer posts on one side and the inner posts on the other side

Protte

It took a while before I understood what you meant. But yes, it seems like a sensible solution. Are there any potential problems with doing it that way?

 

[prototypen]

The support area between the post and the beam becomes smaller.
Risk of the wood in the beam being compressed, writing risk but don't know.
If there is room, you can place a block on the post to increase the support area.

Protte

 

[attefall]

The support surface between the post and beam becomes smaller.
Risk that the wood in the beam compresses, writing risk but not sure.
If there is space, you can put a block on the post to increase the support surface.

Protte

Ok, a little calculation example:
Let's say you have 4 posts, each 140x140. Two in the corners and two in front. Half the surface notched, i.e., 70mm.
250 mm space distance for the glass facade.
For the beam to rest completely in the notches, the support beam should therefore be 70 + 70 + 250 = 390 mm. How do you solve that? Can you join several laminated beams to make it wider? Maybe you can reduce their dimensions a bit if you do so?

 

[bossespecial]

Is it intended, as previously discussed, for the middle pillars to be placed within the section? What is preventing the pillars from being aligned? Perhaps the corner where the glass sections meet can be modified at most.

 

[prototypen]

Ok, some calculation examples:
Let's say you have 4 posts, each 140x140. Two in the corners, and two in front. Notched half the surface, that is, 70mm.
250 mm gap distance for the glass facade.
For the beam to rest completely in the notches, the support beam should be 70 + 70 + 250 = 390 mm. How is that solved? Can multiple glulam beams be combined to make it wider? Could the dimensions be reduced if doing so?

No, that doesn't work.
Can't the outer columns be in line with the ones in the middle, the outer columns don't have to be part of the outer wall.
Or at least they don't have to be in the corner.

Protte

 

[attefall]

Is it intended, as previously discussed, that the middle pillars will be inside the section? What prevents the pillars from being in the same line? Perhaps one could modify the corner where the glass sections meet at most.

No, it doesn't work.
Can't the outer pillars be in line with those in the middle? The outer pillars don't necessarily need to be part of the outer wall.
Or at least not necessarily stand in the corner.

Protte

Yes, exactly, it was intended for the posts to stand inside. One reason for having the others at the far corners is to achieve a thin "meeting point" with the other glass section on one side wall. Another reason might be that the glass section should have posts and a beam above as support? But perhaps there isn't really any valid reason?

My constructor is working on calculating this but has been going back and forth a bit, so I would like to get some other opinions/ideas from all the knowledgeable people here.