AlabamaGuy
Member
I'm planning on building a free standing 15x30 mezzanine in the back of my shop as a base for an apartment. I'm wanting to put the mezzanine up and then stud frame a bottom and top level as opposed to standard load bearing walls with 2x6 studs on bottom and 2x4 on top. My initial questions are what size corner/center posts and what size boards to use for floor joists. I was thinking of 2 15" 2x12s glued together with 2x12 floor joists and 4x6 posts in the corners and one on each side of te mezzanine at the 15' mark.