The barn raising
A 30×40 timber barn raised in a day by a crew of twelve.

Thirty feet wide, forty long, raised in a single afternoon by twelve framers and a borrowed gin pole. The frame went up cut-to-fit — no shims, no gaps.
The frame
size 30 × 40 ft, 8 bents species eastern hemlock, air-dried two years joints through tenons, pegged raise gin pole + hand lines, 6 hours
What we learned
The twelfth bent went up in half the time of the first. By the end of the day the crew was a machine — that's what a raising teaches you.