D Nikolls wrote:Do you mean trusses, built up from multiple whole logs? Or rafters, using individual logs?
Mike Haasl wrote:So you're planning on the rafters spanning across the whole oval? If so are they're going across the narrow way or the long way?
Could you make the bedroom hall wall into a load bearing wall to help hold them up in the middle? I'd be tempted to put a huge 50' log (or two 25' ones) running the long way of the oval resting on the hallway wall in the center. Let's call it a beam. Then, run the rafters the other way (the short direction) from the sides of the oval onto that main central support beam.
Gerry Parent wrote:Always liked the look of the reciprocal roof for a round or oval building. Not sure how well they stand up to tornado winds though.
Earthen floor layers. Picture from the book Earthen floors by Sukita Crimmel and James Thompson
I would imagine if you substituted the final earthen floor layer for the stone/grout, you'd be all set.
Green roof layers: They can vary according to climate but is a general outline: