I actually managed to find a source that described exactly what I'm trying to accomplish.
https://www.jlconline.com/how-to/interiors/beefing-up-attic-joists-for-living-space_o
You are right. The larger side is 2x12s. My other thought is to literally put something like 2x8s or 2x10s in between the 2x4s. And then put my 3/4 OSB on that. I'm just looking to have storage space. No one is living up there or anything like that.
Hello all.
I have a 3 car garage with a sizeable attic space that I would like to insulate and add decking for storage. The 2 bay side ceiling is composed of 2x10s at 16in oc. With a span of 22ft. The 3rd bay is 2x4s at 16in oc and about 8ft span. I would like to bring the deck level up to...