Interesting and a little surprising

[sime42]

 

 

[openspaceman]

Yes interesting but I knew birch outperformed beech and oak, surprised about the weak timbers in the top row.

 

What it doesn't show is other attributes like elasticity and durability

[sime42]

Yes, it'd be better to use pentagons, or even hexagons. It's somewhat misleading as it seems to promote Birch as the best timber for construction, as it out performs the rest on most of the metrics (which did surprise me). However, the durability, or lack of, is the big disadvantage of Birch I think.

 

 

[openspaceman]

57 minutes ago, sime42 said:

Yes, it'd be better to use pentagons, or even hexagons. It's somewhat misleading as it seems to promote Birch as the best timber for construction, as it out performs the rest on most of the metrics (which did surprise me). However, the durability, or lack of, is the big disadvantage of Birch I think.

 

 

Birch plywood is a premium construction material

[sime42]

True. 

 

It's lovely stuff, (except the smell). My brother has made some great speakers from it. Stiffness being a priority quality in that application.

 

 

Edited March 3 by sime42

[Stubby]

Vox AC 30 amps all made from Birch ply . 

[Tree monkey 1682]

13 hours ago, sime42 said:

 

 

I wonder why they dont structurally make engineered birch joists in the nordic countries ?

[sime42]

Yes, I thought similar. Glulam beams, but made from Birch. Anything has to be better than biomass. 

 

 

Edited March 4 by sime42
typo

[openspaceman]

1 hour ago, sime42 said:

Yes, I thought similar. Glulam beams, but made from Birch. Anything has to be better than biomass. 

 

 

I used to fell for a veneer buyer from Germany in the 80s, He tried to find suitable birch in SE England but when sliced they had black flecks in the wood which did not happen in Scandinavian felled trees.

[sime42]

Black flecks of what?