The building is 30 feet wide and as I measured the original mortise placement for the purling posts I noticed that instead of there being an equal 10 feet between the outside of the building to the centre of the mortise holes in each case the posts were 4" closer to the centre line of the building ie: 10'-4" from the outside to the centre of the purlin posts.
I replaced the posts in the same position during the reconstruction although I sort of wondered if it had been a mistake on the framer's part. In the end I discovered why this had been done.
What is your guess?
NH
Was it an 8" post?
sounds like the framer was setting out from/to the edge of the post, not the center, so it was an even 10' to the edge?
