Ive been getting quotes for the past couple years to have a shop put up. The prices are crazy, so really considering a DIY metal building. I have enough pipe laying around or easy access to get more. but pipe takes quite a bit more time with the fitting and welding. 4" square steel square tubing is used pretty common in alot of buildings in my area so thinking about doing that (easier to work with). Im just not completely sure of what thickness I need to use thoughts are minimum of 3/16". anybody have any experience/insight on this?

