New answers tagged lumber
Easy way: did you buy it INSIDE the store? - then it's not PT - they store that out where it can stay nice and wet. That's a KD (kiln dried) stud - it's not PT. It's not greenish, as well, which is a somewhat blatant clue.
I have built several homes and worked for Lowes for many years. At Kowes, we never had any problems with the treated lumber. Non treated, we would have to cull all of the time if it was outside in the Texas heat. Treated lumber is what I would use for your jib. Hope that info helps.
Pressure treated lumber can get warped if left out in the sun. But my experience is that if the lumber is used in an application where it is bolted onto place and secured with proper fasteners that it will work just fine. There is no doubt that certain suppliers of PT lumber are applying the treatment to the lesser grades of the wood.
If you pair the beams up, you should glue them with construction adhesive. Just nailing or screwing them together won't really distribute the load across both beams. Although; you're probably not planning on hanging or resting anything on just one beam and expecting the other beam to help with the load anyway. A pair of 2x8 beams are going to be 3" wide ...
Top 50 recent answers are included