Calculating thickness and width of a yurt Khana

[Keithgrass]

Hi all,

First time posting! My wife and I are planning on building yurts here in New Zealand. I have been searching for months to find willow tress for coppicing to no avail.

Yesterday I came across a mill with 1/4in by 1.5in lathes of grade A Canadian Ceder.

We are planning on making 3 yurts, 12', 16', and 22' (the sizes might be funny because I'm converting from meters)

The question is will these lathes work for all these sizes?

Thanks so much much for your help, I'm so happy to have found the forum.

Best regards,
Keithgrass