About midsummer the 4th year I started putting it together. The framing is 2x6s on the lower floor and 2x4s on the stub walls topside. Rafters are 2x6s. Studs and rafters are 2' on center with purlins also 2' on center. Joists are 2x6s 2' on center and the beams are 2 2x8s bolted together...