Column sizing

[Robban66]

Is there anyone who can calculate if two pieces of 45x120 assembled can handle a column load of about 20 kN?

 

[Gabbe1]

A 45x120 is sufficient for that load. According to the wood guide, one of quality c14 can handle a load of 23.9kN. Naturally, provided that it is laterally braced against buckling.

 

[Krawk]

A 45x120 is sufficient for that load. According to the wood guide, one of quality c14 can handle a load of 23.9kN. Naturally, provided that it is braced laterally against buckling.

Which table are you looking at? Sounds more like you're looking at a wall stud. Since Robban doesn't specify the height of the column, it's quite bold to claim that it will hold...

 

[Robban66]

It is true that I forgot the height, the columns will be around 210 cbm.

 

[Gabbe1]

Which table are you looking at? Sounds more like you're checking against a wall rule.
Since Robban doesn't specify a height for the column, it's quite bold to claim it will hold...

As I wrote, this applies under the condition that the column is braced against buckling, and then it holds.
If it is to stand completely standalone, there is a risk that it may buckle.
In that case, you should screw/glue/nail 2 pieces together to be on the safe side.

 

[Robban66]

Okay, then I'll go with two, thanks for the help.