My grandpa was a card-carrying union carpenter. But all I remember is him doing general labor... all the actual carpentry jobs were gone before I was born, and I hit the half-century mark myself a few years ago. He worked with concrete and steel alot. I'd seen him put up cinder block too, picked that up somewhere I guess. And this was in the 1980s.

I'd take your bet, while trying to hustle you to raise the wager.

Everything I'm finding is showing the opposite with the exception of Microsoft experimenting with timber datacenters. Just looking at photos of DCs under construction shows they're all steel and concrete.