Metal ring for a 20ft yurt

[Yurtman]

For Roof rafters, I will be using clear Vertical Grain Doug Fir. No knots. It’s really tight grain, beautiful and expensive, but incredibly strong. You are right about knots though
The way big yurts fail under load is often rotation of ring in the horizontal plane rather than just collapsing down or rafter breaking, unless cheaper construction lumber is used. Knots are the weak points then.

My lattice walls will be made from clear straight grain Doug Fir. 1.5”x3/4” way thicker than most yurt manufacturers. I think it will be interesting to see what its rating will be when it’s engineered.

I don’t know what the weight of the big wooden Rings that the big yurt makers weigh, but I think my ring will be the similar or even less.

I’d be curious to know what the experiences are of those who have had a yurt collapse.