I had to admit that i probaby did not have the where with all to complete this project. finished walls (studs) first layter of floor, and window inserts ready, but just not sure about hauling 4X8 sheets of 1/2"OSB up ladders to the roof, and had to make all the rafters. Made all the rafters, layed out a jig on the floor and cut 2X4's with both plywood and steel gussets. Made thirteen in all on 16" centers.
but had to hire a crew to install rafters, and put plywood down and tarpaper and shingles, decided to redo the original roof, and repair and re shingle. (was a good idea, one of the plywood pieces was damaged from water)
ready to lay flnal floor, windows, one door from shop to layoutm cover the whole thing with tar paper and then shake cedar shingles
16X12' addition to existing shop, all railroad