Hi Sim,

This appears to be a very complicated subject that is probably beyond the reach of most framers and I do wonder at times whether this pursuit of overcomplication is really necessary. For example the hip rafter is more usually set in the plane of the long wall roof -



- with the hip rafters then being the only rafters needing to be cut with birdsmouths.



I have added a link to your blog on the Harcourt Cruck half hip layout page on the timber framing section of the Oxfordshire Woodland Group Forum.

Ken Hume