Here's a couple pics. (one was posted earlier) One shot is of a good sized crib tower. Only part of the tower is shown. The barn has a basement and the tower went clear to the cellar, probably a 30-foot tower at least... i.e., lots of cribbing!
A rafter snapped:
And here is how they re-supported the purlins:
Can someone chime in and share their thoughts on using pressure treated timber in restorations. And it seems like a good choice for cribs, but you hardly ever see it used.
???