Dunno the exact answer, except that it's "a lot." One time in college a friend and I tested the compressive strength of an ordinary soup can, with the ends cut out, and it supported over a thousand pounds before it began to buckle.
That was slow, uniform loading though.
Try to make a living, not a killing. -- Utah Phillips
Don't believe everything you know. -- Bumper sticker
Everybody is ignorant, only on different subjects. -- Will Rogers
Law of Logical Argument - Anything is possible if you don't know what you are talking about.