Column load lumber

[Sam_u_El]

Hello,

If you select nice 45x95 studs at any arbitrary low-cost store (read: byggmax), glue and screw them together in pairs, and thus get a pillar of 90x95, what column load can they withstand at a length of about 2.2-2.3m?

Thanks in advance,

 

[Krawk]

Maybe 20kN.
You can achieve significantly higher with wood of better quality.

http://www.traguiden.se/TGtemplates/popup1spalt.aspx?id=726&contextPage=1458
Quick calculation: 2*column load in y-direction.

 

[MathiasS]

Depending on the load case, it may also be possible to significantly improve the performance of the pole by fixing the pole in the middle, thereby preventing bending. Gut feeling suggests that the load the pole can handle would then be many times higher.

 

[Sam_u_El]

Is an ungraded beam at the lumberyard automatically K12/C14, or can it be worse than that? If you find a beam that looks nice (few knots, dense grain, not twisted, etc.), can you then equate it with a higher grade?

 

[anaitis]

Depending on the load case, it might also be possible to significantly improve the performance of the post by fixing the post in the middle and thus preventing bending. Intuition suggests that it can handle a considerably higher load then.

You probably mean "prevent buckling"!
How a column is laterally supported and whether there are moment-stiff end attachments significantly affects the possible load.