I can't find any markings on them or any permits online.
They are pretty beasty though, the 2x12s overlap each other by 9 1/2' and have 13 bolts holding them together and to the 2x6 king post and webbing stacks. Plus the bolts holding them and bracing them to the 6x6s on the side and bolts...
Yes, the first two pictures with the lights are the room I want to put the ceiling in. I'm planning on just screwing into the existing joists through the 1x4s that are there. The others show the exposed trusses in the other side of the shop.
I will climb up and see if I can find any markings...
I am wanting to add a metal (probably) ceiling to this side of my shop but am concerned about the weight. This side is 24x40' and it looks like it would only add ~650lbs total and the metal panels are well under 1lb / sf.
The shop was build in 1981 and 2x12 trusses are 12' OC. The previous...