Suitable glulam beam carport?

[justusandersson]

I myself arrived at 6.3 kN so we're pretty close to each other. What positions do you have for the point loads?

 

[scorp1on]

c/c 1.2 m over 6 m beam on 3 supports.

 

[justusandersson]

Same as me. What was your maximum deflection?

 

[scorp1on]

Total initial deflection 2.4 mm, total final deflection 4.4 mm.

 

[justusandersson]

How do you come up with those numbers?

 

[scorp1on]

Didn't have the energy to calculate it by hand with tables and superposition, so I used an online beam tool based on FEM.

 

[scorp1on]

 

[justusandersson]

There is definitely a bit of cheating with FEM, but it explains the small differences compared to my calculation. Yours is probably better.

 

[scorp1on]

Haha, cheating and cheating I don't know, but the programs are dangerous for someone who doesn't understand them, that's for sure!

 

[Boan]

There's probably no danger if you size for climate class 3, kmod =0.65. It reduces the strength quite a bit beyond the safety factors.

snow zone 1.5 it is....

34
years with 145x45

 

[Boan]

[image]

climate class 3? Is it the same as snow zone? It's 1.5 here

 

[Boan]

I myself came to 6.3 kN so we are quite close to each other. What positions do you have for the point loads?

They are out of phase. 1.2m between the roof trusses, i.e.

2.4
3.6
4.8

 

[scorp1on]

Snow zone 1.5 corresponds to a snow load of 1.5 kN/m2 on the ground, which is then recalculated to a snow load on the roof considering factors such as the slope.

Climate classes relate to the wood's moisture content: how severely it is assumed to be exposed to precipitation and other factors. Moisture affects the strength of the wood.

Centrumavatånd 1.2 m means exactly that they are at a distance of 1.2, 2.4, ... 6m.

 

[Boan]

Snow zone 1.5 corresponds to snow load 1.5 kN/m2 on the ground, which is then converted to a snow load on the roof considering the slope, among other factors.

Climate classes relate to the moisture content of wood: how much it's assumed to be exposed to precipitation and other factors. Moisture affects the strength of the wood.

Centrumavstånd 1.2 m means exactly that they are at 1.2, 2.4, ... 6m distances.

Exactly, it was a question of where they were located, so they are two per 3 m free span. But I will go with a 56x225, then glue and screw it to the top plate that is there now, though it has bent quite a bit...

I would guess the roof slope is about 15-20,