Reciprocal roof, advice needed

Yes, he has a very big backyard. He already has a Yurt we build 3 years ago. We made a bathroom from an old polyester silo for the yurt. At the moment he is building an outdoor kitchen from steel panels that form a pumpkin shape.
The reciprocal frame is to be covered with willow branches, then straw for insulation. EPDM for weatherproofing and then soil. It’s going to be a guesthouse.

thank you for this tip, didn’t know it yet!!

This is not easy as the “ends” of the logs are not circles anymore…
Offcourse if I rebuild the logs this would be an easy task!